20490904

素因数分解:

$2^3\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1531}}^1$

素因数の和:1783

約数の個数: 32

約数和(自身を含む): 44121600

約数和(自身を除く): 23630696

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 239, 478, 956, 1531, 1673, 1912, 3062, 3346, 6124, 6692, 10717, 12248, 13384, 21434, 42868, 85736, 365909, 731818, 1463636, 2561363, 2927272, 5122726, 10245452, 20490904]

約数ペア:

[(1, 20490904), (2, 10245452), (4, 5122726), (7, 2927272), (8, 2561363), (14, 1463636), (28, 731818), (56, 365909), (239, 85736), (478, 42868), (956, 21434), (1531, 13384), (1673, 12248), (1912, 10717), (3062, 6692), (3346, 6124)]