20185680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{557}}^1$

素因数の和:724

約数の個数: 80

約数和(自身を含む): 63103104

約数和(自身を除く): 42917424

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 151, 240, 302, 453, 557, 604, 755, 906, 1114, 1208, 1510, 1671, 1812, 2228, 2265, 2416, 2785, 3020, 3342, 3624, 4456, 4530, 5570, 6040, 6684, 7248, 8355, 8912, 9060, 11140, 12080, 13368, 16710, 18120, 22280, 26736, 33420, 36240, 44560, 66840, 84107, 133680, 168214, 252321, 336428, 420535, 504642, 672856, 841070, 1009284, 1261605, 1345712, 1682140, 2018568, 2523210, 3364280, 4037136, 5046420, 6728560, 10092840, 20185680]

約数ペア:

[(1, 20185680), (2, 10092840), (3, 6728560), (4, 5046420), (5, 4037136), (6, 3364280), (8, 2523210), (10, 2018568), (12, 1682140), (15, 1345712), (16, 1261605), (20, 1009284), (24, 841070), (30, 672856), (40, 504642), (48, 420535), (60, 336428), (80, 252321), (120, 168214), (151, 133680), (240, 84107), (302, 66840), (453, 44560), (557, 36240), (604, 33420), (755, 26736), (906, 22280), (1114, 18120), (1208, 16710), (1510, 13368), (1671, 12080), (1812, 11140), (2228, 9060), (2265, 8912), (2416, 8355), (2785, 7248), (3020, 6684), (3342, 6040), (3624, 5570), (4456, 4530)]