81547920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2137}}^1$

素因数の和:2209

約数の個数: 120

約数和(自身を含む): 279162936

約数和(自身を除く): 197615016

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 53, 60, 72, 80, 90, 106, 120, 144, 159, 180, 212, 240, 265, 318, 360, 424, 477, 530, 636, 720, 795, 848, 954, 1060, 1272, 1590, 1908, 2120, 2137, 2385, 2544, 3180, 3816, 4240, 4274, 4770, 6360, 6411, 7632, 8548, 9540, 10685, 12720, 12822, 17096, 19080, 19233, 21370, 25644, 32055, 34192, 38160, 38466, 42740, 51288, 64110, 76932, 85480, 96165, 102576, 113261, 128220, 153864, 170960, 192330, 226522, 256440, 307728, 339783, 384660, 453044, 512880, 566305, 679566, 769320, 906088, 1019349, 1132610, 1359132, 1538640, 1698915, 1812176, 2038698, 2265220, 2718264, 3397830, 4077396, 4530440, 5096745, 5436528, 6795660, 8154792, 9060880, 10193490, 13591320, 16309584, 20386980, 27182640, 40773960, 81547920]

約数ペア:

[(1, 81547920), (2, 40773960), (3, 27182640), (4, 20386980), (5, 16309584), (6, 13591320), (8, 10193490), (9, 9060880), (10, 8154792), (12, 6795660), (15, 5436528), (16, 5096745), (18, 4530440), (20, 4077396), (24, 3397830), (30, 2718264), (36, 2265220), (40, 2038698), (45, 1812176), (48, 1698915), (53, 1538640), (60, 1359132), (72, 1132610), (80, 1019349), (90, 906088), (106, 769320), (120, 679566), (144, 566305), (159, 512880), (180, 453044), (212, 384660), (240, 339783), (265, 307728), (318, 256440), (360, 226522), (424, 192330), (477, 170960), (530, 153864), (636, 128220), (720, 113261), (795, 102576), (848, 96165), (954, 85480), (1060, 76932), (1272, 64110), (1590, 51288), (1908, 42740), (2120, 38466), (2137, 38160), (2385, 34192), (2544, 32055), (3180, 25644), (3816, 21370), (4240, 19233), (4274, 19080), (4770, 17096), (6360, 12822), (6411, 12720), (7632, 10685), (8548, 9540)]