21199688

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61627}}^1$

素因数の和:61676

約数の個数: 16

約数和(自身を含む): 40674480

約数和(自身を除く): 19474792

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61627, 123254, 246508, 493016, 2649961, 5299922, 10599844, 21199688]

約数ペア:

[(1, 21199688), (2, 10599844), (4, 5299922), (8, 2649961), (43, 493016), (86, 246508), (172, 123254), (344, 61627)]