20021665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{2161}}^1$

素因数の和:2292

約数の個数: 16

約数和(自身を含む): 25684560

約数和(自身を除く): 5662895

約数列:

[1, 5, 17, 85, 109, 545, 1853, 2161, 9265, 10805, 36737, 183685, 235549, 1177745, 4004333, 20021665]

約数ペア:

[(1, 20021665), (5, 4004333), (17, 1177745), (85, 235549), (109, 183685), (545, 36737), (1853, 10805), (2161, 9265)]