1638307840

素因数分解:

$2^{11}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:468

約数の個数: 192

約数和(自身を含む): 4380929280

約数和(自身を除く): 2742621440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 397, 403, 416, 496, 512, 520, 620, 640, 794, 806, 832, 992, 1024, 1040, 1240, 1280, 1588, 1612, 1664, 1984, 1985, 2015, 2048, 2080, 2480, 2560, 3176, 3224, 3328, 3968, 3970, 4030, 4160, 4960, 5120, 5161, 6352, 6448, 6656, 7936, 7940, 8060, 8320, 9920, 10240, 10322, 12307, 12704, 12896, 13312, 15872, 15880, 16120, 16640, 19840, 20644, 24614, 25408, 25792, 25805, 26624, 31744, 31760, 32240, 33280, 39680, 41288, 49228, 50816, 51584, 51610, 61535, 63488, 63520, 64480, 66560, 79360, 82576, 98456, 101632, 103168, 103220, 123070, 127040, 128960, 133120, 158720, 159991, 165152, 196912, 203264, 206336, 206440, 246140, 254080, 257920, 317440, 319982, 330304, 393824, 406528, 412672, 412880, 492280, 508160, 515840, 639964, 660608, 787648, 799955, 813056, 825344, 825760, 984560, 1016320, 1031680, 1279928, 1321216, 1575296, 1599910, 1651520, 1969120, 2032640, 2063360, 2559856, 2642432, 3150592, 3199820, 3303040, 3938240, 4065280, 4126720, 5119712, 5284864, 6301184, 6399640, 6606080, 7876480, 10239424, 10569728, 12602368, 12799280, 13212160, 15752960, 20478848, 25204736, 25598560, 26424320, 31505920, 40957696, 51197120, 52848640, 63011840, 81915392, 102394240, 126023680, 163830784, 204788480, 327661568, 409576960, 819153920, 1638307840]

約数ペア:

[(1, 1638307840), (2, 819153920), (4, 409576960), (5, 327661568), (8, 204788480), (10, 163830784), (13, 126023680), (16, 102394240), (20, 81915392), (26, 63011840), (31, 52848640), (32, 51197120), (40, 40957696), (52, 31505920), (62, 26424320), (64, 25598560), (65, 25204736), (80, 20478848), (104, 15752960), (124, 13212160), (128, 12799280), (130, 12602368), (155, 10569728), (160, 10239424), (208, 7876480), (248, 6606080), (256, 6399640), (260, 6301184), (310, 5284864), (320, 5119712), (397, 4126720), (403, 4065280), (416, 3938240), (496, 3303040), (512, 3199820), (520, 3150592), (620, 2642432), (640, 2559856), (794, 2063360), (806, 2032640), (832, 1969120), (992, 1651520), (1024, 1599910), (1040, 1575296), (1240, 1321216), (1280, 1279928), (1588, 1031680), (1612, 1016320), (1664, 984560), (1984, 825760), (1985, 825344), (2015, 813056), (2048, 799955), (2080, 787648), (2480, 660608), (2560, 639964), (3176, 515840), (3224, 508160), (3328, 492280), (3968, 412880), (3970, 412672), (4030, 406528), (4160, 393824), (4960, 330304), (5120, 319982), (5161, 317440), (6352, 257920), (6448, 254080), (6656, 246140), (7936, 206440), (7940, 206336), (8060, 203264), (8320, 196912), (9920, 165152), (10240, 159991), (10322, 158720), (12307, 133120), (12704, 128960), (12896, 127040), (13312, 123070), (15872, 103220), (15880, 103168), (16120, 101632), (16640, 98456), (19840, 82576), (20644, 79360), (24614, 66560), (25408, 64480), (25792, 63520), (25805, 63488), (26624, 61535), (31744, 51610), (31760, 51584), (32240, 50816), (33280, 49228), (39680, 41288)]