21357620

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5591}}^1$

素因数の和:5791

約数の個数: 24

約数和(自身を含む): 45093888

約数和(自身を除く): 23736268

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5591, 11182, 22364, 27955, 55910, 111820, 1067881, 2135762, 4271524, 5339405, 10678810, 21357620]

約数ペア:

[(1, 21357620), (2, 10678810), (4, 5339405), (5, 4271524), (10, 2135762), (20, 1067881), (191, 111820), (382, 55910), (764, 27955), (955, 22364), (1910, 11182), (3820, 5591)]