20215754920

素因数分解:

$2^3\times 5^1\times {\mathrm{505393873}}^1$

素因数の和:505393884

約数の個数: 16

約数和(自身を含む): 45485448660

約数和(自身を除く): 25269693740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505393873, 1010787746, 2021575492, 2526969365, 4043150984, 5053938730, 10107877460, 20215754920]

約数ペア:

[(1, 20215754920), (2, 10107877460), (4, 5053938730), (5, 4043150984), (8, 2526969365), (10, 2021575492), (20, 1010787746), (40, 505393873)]