1991321600

素因数分解:

$2^{11}\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 288

約数和(自身を含む): 5484024000

約数和(自身を除く): 3492702400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 25, 32, 38, 40, 46, 50, 64, 76, 80, 89, 92, 95, 100, 115, 128, 152, 160, 178, 184, 190, 200, 230, 256, 304, 320, 356, 368, 380, 400, 437, 445, 460, 475, 512, 575, 608, 640, 712, 736, 760, 800, 874, 890, 920, 950, 1024, 1150, 1216, 1280, 1424, 1472, 1520, 1600, 1691, 1748, 1780, 1840, 1900, 2047, 2048, 2185, 2225, 2300, 2432, 2560, 2848, 2944, 3040, 3200, 3382, 3496, 3560, 3680, 3800, 4094, 4370, 4450, 4600, 4864, 5120, 5696, 5888, 6080, 6400, 6764, 6992, 7120, 7360, 7600, 8188, 8455, 8740, 8900, 9200, 9728, 10235, 10240, 10925, 11392, 11776, 12160, 12800, 13528, 13984, 14240, 14720, 15200, 16376, 16910, 17480, 17800, 18400, 19456, 20470, 21850, 22784, 23552, 24320, 25600, 27056, 27968, 28480, 29440, 30400, 32752, 33820, 34960, 35600, 36800, 38893, 38912, 40940, 42275, 43700, 45568, 47104, 48640, 51175, 51200, 54112, 55936, 56960, 58880, 60800, 65504, 67640, 69920, 71200, 73600, 77786, 81880, 84550, 87400, 91136, 97280, 102350, 108224, 111872, 113920, 117760, 121600, 131008, 135280, 139840, 142400, 147200, 155572, 163760, 169100, 174800, 182272, 194465, 194560, 204700, 216448, 223744, 227840, 235520, 243200, 262016, 270560, 279680, 284800, 294400, 311144, 327520, 338200, 349600, 388930, 409400, 432896, 447488, 455680, 486400, 524032, 541120, 559360, 569600, 588800, 622288, 655040, 676400, 699200, 777860, 818800, 865792, 894976, 911360, 972325, 972800, 1048064, 1082240, 1118720, 1139200, 1177600, 1244576, 1310080, 1352800, 1398400, 1555720, 1637600, 1731584, 1944650, 2096128, 2164480, 2237440, 2278400, 2489152, 2620160, 2705600, 2796800, 3111440, 3275200, 3463168, 3889300, 4192256, 4328960, 4474880, 4556800, 4978304, 5240320, 5411200, 5593600, 6222880, 6550400, 7778600, 8657920, 9956608, 10480640, 10822400, 11187200, 12445760, 13100800, 15557200, 17315840, 19913216, 20961280, 21644800, 22374400, 24891520, 26201600, 31114400, 39826432, 43289600, 49783040, 52403200, 62228800, 79652864, 86579200, 99566080, 104806400, 124457600, 199132160, 248915200, 398264320, 497830400, 995660800, 1991321600]

約数ペア:

[(1, 1991321600), (2, 995660800), (4, 497830400), (5, 398264320), (8, 248915200), (10, 199132160), (16, 124457600), (19, 104806400), (20, 99566080), (23, 86579200), (25, 79652864), (32, 62228800), (38, 52403200), (40, 49783040), (46, 43289600), (50, 39826432), (64, 31114400), (76, 26201600), (80, 24891520), (89, 22374400), (92, 21644800), (95, 20961280), (100, 19913216), (115, 17315840), (128, 15557200), (152, 13100800), (160, 12445760), (178, 11187200), (184, 10822400), (190, 10480640), (200, 9956608), (230, 8657920), (256, 7778600), (304, 6550400), (320, 6222880), (356, 5593600), (368, 5411200), (380, 5240320), (400, 4978304), (437, 4556800), (445, 4474880), (460, 4328960), (475, 4192256), (512, 3889300), (575, 3463168), (608, 3275200), (640, 3111440), (712, 2796800), (736, 2705600), (760, 2620160), (800, 2489152), (874, 2278400), (890, 2237440), (920, 2164480), (950, 2096128), (1024, 1944650), (1150, 1731584), (1216, 1637600), (1280, 1555720), (1424, 1398400), (1472, 1352800), (1520, 1310080), (1600, 1244576), (1691, 1177600), (1748, 1139200), (1780, 1118720), (1840, 1082240), (1900, 1048064), (2047, 972800), (2048, 972325), (2185, 911360), (2225, 894976), (2300, 865792), (2432, 818800), (2560, 777860), (2848, 699200), (2944, 676400), (3040, 655040), (3200, 622288), (3382, 588800), (3496, 569600), (3560, 559360), (3680, 541120), (3800, 524032), (4094, 486400), (4370, 455680), (4450, 447488), (4600, 432896), (4864, 409400), (5120, 388930), (5696, 349600), (5888, 338200), (6080, 327520), (6400, 311144), (6764, 294400), (6992, 284800), (7120, 279680), (7360, 270560), (7600, 262016), (8188, 243200), (8455, 235520), (8740, 227840), (8900, 223744), (9200, 216448), (9728, 204700), (10235, 194560), (10240, 194465), (10925, 182272), (11392, 174800), (11776, 169100), (12160, 163760), (12800, 155572), (13528, 147200), (13984, 142400), (14240, 139840), (14720, 135280), (15200, 131008), (16376, 121600), (16910, 117760), (17480, 113920), (17800, 111872), (18400, 108224), (19456, 102350), (20470, 97280), (21850, 91136), (22784, 87400), (23552, 84550), (24320, 81880), (25600, 77786), (27056, 73600), (27968, 71200), (28480, 69920), (29440, 67640), (30400, 65504), (32752, 60800), (33820, 58880), (34960, 56960), (35600, 55936), (36800, 54112), (38893, 51200), (38912, 51175), (40940, 48640), (42275, 47104), (43700, 45568)]