20571860

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{3911}}^1$

素因数の和:4183

約数の個数: 24

約数和(自身を含む): 43376256

約数和(自身を除く): 22804396

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 3911, 5260, 7822, 15644, 19555, 39110, 78220, 1028593, 2057186, 4114372, 5142965, 10285930, 20571860]

約数ペア:

[(1, 20571860), (2, 10285930), (4, 5142965), (5, 4114372), (10, 2057186), (20, 1028593), (263, 78220), (526, 39110), (1052, 19555), (1315, 15644), (2630, 7822), (3911, 5260)]