20621321

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{773}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 24470784

約数和(自身を除く): 3849463

約数列:

[1, 7, 37, 103, 259, 721, 773, 3811, 5411, 26677, 28601, 79619, 200207, 557333, 2945903, 20621321]

約数ペア:

[(1, 20621321), (7, 2945903), (37, 557333), (103, 200207), (259, 79619), (721, 28601), (773, 26677), (3811, 5411)]