21195736

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155851}}^1$

素因数の和:155874

約数の個数: 16

約数和(自身を含む): 42080040

約数和(自身を除く): 20884304

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155851, 311702, 623404, 1246808, 2649467, 5298934, 10597868, 21195736]

約数ペア:

[(1, 21195736), (2, 10597868), (4, 5298934), (8, 2649467), (17, 1246808), (34, 623404), (68, 311702), (136, 155851)]