21356040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177967}}^1$

素因数の和:177981

約数の個数: 32

約数和(自身を含む): 64068480

約数和(自身を除く): 42712440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177967, 355934, 533901, 711868, 889835, 1067802, 1423736, 1779670, 2135604, 2669505, 3559340, 4271208, 5339010, 7118680, 10678020, 21356040]

約数ペア:

[(1, 21356040), (2, 10678020), (3, 7118680), (4, 5339010), (5, 4271208), (6, 3559340), (8, 2669505), (10, 2135604), (12, 1779670), (15, 1423736), (20, 1067802), (24, 889835), (30, 711868), (40, 533901), (60, 355934), (120, 177967)]