81687840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:116

約数の個数: 288

約数和(自身を含む): 298831680

約数和(自身を除く): 217143840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 24, 26, 30, 32, 38, 39, 40, 48, 52, 53, 57, 60, 65, 76, 78, 80, 95, 96, 104, 106, 114, 120, 130, 152, 156, 159, 160, 169, 190, 195, 208, 212, 228, 240, 247, 260, 265, 285, 304, 312, 318, 338, 380, 390, 416, 424, 456, 480, 494, 507, 520, 530, 570, 608, 624, 636, 676, 689, 741, 760, 780, 795, 845, 848, 912, 988, 1007, 1014, 1040, 1060, 1140, 1235, 1248, 1272, 1352, 1378, 1482, 1520, 1560, 1590, 1690, 1696, 1824, 1976, 2014, 2028, 2067, 2080, 2120, 2280, 2470, 2535, 2544, 2704, 2756, 2964, 3021, 3040, 3120, 3180, 3211, 3380, 3445, 3705, 3952, 4028, 4056, 4134, 4240, 4560, 4940, 5035, 5070, 5088, 5408, 5512, 5928, 6042, 6240, 6360, 6422, 6760, 6890, 7410, 7904, 8056, 8112, 8268, 8480, 8957, 9120, 9633, 9880, 10070, 10140, 10335, 11024, 11856, 12084, 12720, 12844, 13091, 13520, 13780, 14820, 15105, 16055, 16112, 16224, 16536, 17914, 19266, 19760, 20140, 20280, 20670, 22048, 23712, 24168, 25440, 25688, 26182, 26871, 27040, 27560, 29640, 30210, 32110, 32224, 33072, 35828, 38532, 39273, 39520, 40280, 40560, 41340, 44785, 48165, 48336, 51376, 52364, 53742, 55120, 59280, 60420, 64220, 65455, 66144, 71656, 77064, 78546, 80560, 81120, 82680, 89570, 96330, 96672, 102752, 104728, 107484, 110240, 118560, 120840, 128440, 130910, 134355, 143312, 154128, 157092, 161120, 165360, 170183, 179140, 192660, 196365, 209456, 214968, 241680, 256880, 261820, 268710, 286624, 308256, 314184, 330720, 340366, 358280, 385320, 392730, 418912, 429936, 483360, 510549, 513760, 523640, 537420, 628368, 680732, 716560, 770640, 785460, 850915, 859872, 1021098, 1047280, 1074840, 1256736, 1361464, 1433120, 1541280, 1570920, 1701830, 2042196, 2094560, 2149680, 2552745, 2722928, 3141840, 3403660, 4084392, 4299360, 5105490, 5445856, 6283680, 6807320, 8168784, 10210980, 13614640, 16337568, 20421960, 27229280, 40843920, 81687840]

約数ペア:

[(1, 81687840), (2, 40843920), (3, 27229280), (4, 20421960), (5, 16337568), (6, 13614640), (8, 10210980), (10, 8168784), (12, 6807320), (13, 6283680), (15, 5445856), (16, 5105490), (19, 4299360), (20, 4084392), (24, 3403660), (26, 3141840), (30, 2722928), (32, 2552745), (38, 2149680), (39, 2094560), (40, 2042196), (48, 1701830), (52, 1570920), (53, 1541280), (57, 1433120), (60, 1361464), (65, 1256736), (76, 1074840), (78, 1047280), (80, 1021098), (95, 859872), (96, 850915), (104, 785460), (106, 770640), (114, 716560), (120, 680732), (130, 628368), (152, 537420), (156, 523640), (159, 513760), (160, 510549), (169, 483360), (190, 429936), (195, 418912), (208, 392730), (212, 385320), (228, 358280), (240, 340366), (247, 330720), (260, 314184), (265, 308256), (285, 286624), (304, 268710), (312, 261820), (318, 256880), (338, 241680), (380, 214968), (390, 209456), (416, 196365), (424, 192660), (456, 179140), (480, 170183), (494, 165360), (507, 161120), (520, 157092), (530, 154128), (570, 143312), (608, 134355), (624, 130910), (636, 128440), (676, 120840), (689, 118560), (741, 110240), (760, 107484), (780, 104728), (795, 102752), (845, 96672), (848, 96330), (912, 89570), (988, 82680), (1007, 81120), (1014, 80560), (1040, 78546), (1060, 77064), (1140, 71656), (1235, 66144), (1248, 65455), (1272, 64220), (1352, 60420), (1378, 59280), (1482, 55120), (1520, 53742), (1560, 52364), (1590, 51376), (1690, 48336), (1696, 48165), (1824, 44785), (1976, 41340), (2014, 40560), (2028, 40280), (2067, 39520), (2080, 39273), (2120, 38532), (2280, 35828), (2470, 33072), (2535, 32224), (2544, 32110), (2704, 30210), (2756, 29640), (2964, 27560), (3021, 27040), (3040, 26871), (3120, 26182), (3180, 25688), (3211, 25440), (3380, 24168), (3445, 23712), (3705, 22048), (3952, 20670), (4028, 20280), (4056, 20140), (4134, 19760), (4240, 19266), (4560, 17914), (4940, 16536), (5035, 16224), (5070, 16112), (5088, 16055), (5408, 15105), (5512, 14820), (5928, 13780), (6042, 13520), (6240, 13091), (6360, 12844), (6422, 12720), (6760, 12084), (6890, 11856), (7410, 11024), (7904, 10335), (8056, 10140), (8112, 10070), (8268, 9880), (8480, 9633), (8957, 9120)]