20998211830

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72407627}}^1$

素因数の和:72407663

約数の個数: 16

約数和(自身を含む): 39100119120

約数和(自身を除く): 18101907290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72407627, 144815254, 362038135, 724076270, 2099821183, 4199642366, 10499105915, 20998211830]

約数ペア:

[(1, 20998211830), (2, 10499105915), (5, 4199642366), (10, 2099821183), (29, 724076270), (58, 362038135), (145, 144815254), (290, 72407627)]