81205680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4283}}^1$

素因数の和:4378

約数の個数: 80

約数和(自身を含む): 254983680

約数和(自身を除く): 173778000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 79, 80, 120, 158, 237, 240, 316, 395, 474, 632, 790, 948, 1185, 1264, 1580, 1896, 2370, 3160, 3792, 4283, 4740, 6320, 8566, 9480, 12849, 17132, 18960, 21415, 25698, 34264, 42830, 51396, 64245, 68528, 85660, 102792, 128490, 171320, 205584, 256980, 338357, 342640, 513960, 676714, 1015071, 1027920, 1353428, 1691785, 2030142, 2706856, 3383570, 4060284, 5075355, 5413712, 6767140, 8120568, 10150710, 13534280, 16241136, 20301420, 27068560, 40602840, 81205680]

約数ペア:

[(1, 81205680), (2, 40602840), (3, 27068560), (4, 20301420), (5, 16241136), (6, 13534280), (8, 10150710), (10, 8120568), (12, 6767140), (15, 5413712), (16, 5075355), (20, 4060284), (24, 3383570), (30, 2706856), (40, 2030142), (48, 1691785), (60, 1353428), (79, 1027920), (80, 1015071), (120, 676714), (158, 513960), (237, 342640), (240, 338357), (316, 256980), (395, 205584), (474, 171320), (632, 128490), (790, 102792), (948, 85660), (1185, 68528), (1264, 64245), (1580, 51396), (1896, 42830), (2370, 34264), (3160, 25698), (3792, 21415), (4283, 18960), (4740, 17132), (6320, 12849), (8566, 9480)]