21084620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24517}}^1$

素因数の和:24569

約数の個数: 24

約数和(自身を含む): 45309264

約数和(自身を除く): 24224644

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24517, 49034, 98068, 122585, 245170, 490340, 1054231, 2108462, 4216924, 5271155, 10542310, 21084620]

約数ペア:

[(1, 21084620), (2, 10542310), (4, 5271155), (5, 4216924), (10, 2108462), (20, 1054231), (43, 490340), (86, 245170), (172, 122585), (215, 98068), (430, 49034), (860, 24517)]