81332780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{94573}}^1$

素因数の和:94625

約数の個数: 24

約数和(自身を含む): 174772752

約数和(自身を除く): 93439972

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 94573, 189146, 378292, 472865, 945730, 1891460, 4066639, 8133278, 16266556, 20333195, 40666390, 81332780]

約数ペア:

[(1, 81332780), (2, 40666390), (4, 20333195), (5, 16266556), (10, 8133278), (20, 4066639), (43, 1891460), (86, 945730), (172, 472865), (215, 378292), (430, 189146), (860, 94573)]