15978680

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2207}}^1$

素因数の和:2399

約数の個数: 32

約数和(自身を含む): 36167040

約数和(自身を除く): 20188360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2207, 3620, 4414, 7240, 8828, 11035, 17656, 22070, 44140, 88280, 399467, 798934, 1597868, 1997335, 3195736, 3994670, 7989340, 15978680]

約数ペア:

[(1, 15978680), (2, 7989340), (4, 3994670), (5, 3195736), (8, 1997335), (10, 1597868), (20, 798934), (40, 399467), (181, 88280), (362, 44140), (724, 22070), (905, 17656), (1448, 11035), (1810, 8828), (2207, 7240), (3620, 4414)]