20901755

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{35129}}^1$

素因数の和:35158

約数の個数: 16

約数和(自身を含む): 30352320

約数和(自身を除く): 9450565

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 35129, 175645, 245903, 597193, 1229515, 2985965, 4180351, 20901755]

約数ペア:

[(1, 20901755), (5, 4180351), (7, 2985965), (17, 1229515), (35, 597193), (85, 245903), (119, 175645), (595, 35129)]