78219920

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4091}}^1$

素因数の和:4343

約数の個数: 40

約数和(自身を含む): 182666880

約数和(自身を除く): 104446960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1195, 1912, 2390, 3824, 4091, 4780, 8182, 9560, 16364, 19120, 20455, 32728, 40910, 65456, 81820, 163640, 327280, 977749, 1955498, 3910996, 4888745, 7821992, 9777490, 15643984, 19554980, 39109960, 78219920]

約数ペア:

[(1, 78219920), (2, 39109960), (4, 19554980), (5, 15643984), (8, 9777490), (10, 7821992), (16, 4888745), (20, 3910996), (40, 1955498), (80, 977749), (239, 327280), (478, 163640), (956, 81820), (1195, 65456), (1912, 40910), (2390, 32728), (3824, 20455), (4091, 19120), (4780, 16364), (8182, 9560)]