20197745

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{2539}}^1$

素因数の和:2624

約数の個数: 16

約数和(自身を含む): 25481280

約数和(自身を除く): 5283535

約数列:

[1, 5, 37, 43, 185, 215, 1591, 2539, 7955, 12695, 93943, 109177, 469715, 545885, 4039549, 20197745]

約数ペア:

[(1, 20197745), (5, 4039549), (37, 545885), (43, 469715), (185, 109177), (215, 93943), (1591, 12695), (2539, 7955)]