19554980

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4091}}^1$

素因数の和:4339

約数の個数: 24

約数和(自身を含む): 41247360

約数和(自身を除く): 21692380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4091, 4780, 8182, 16364, 20455, 40910, 81820, 977749, 1955498, 3910996, 4888745, 9777490, 19554980]

約数ペア:

[(1, 19554980), (2, 9777490), (4, 4888745), (5, 3910996), (10, 1955498), (20, 977749), (239, 81820), (478, 40910), (956, 20455), (1195, 16364), (2390, 8182), (4091, 4780)]