20451740

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6863}}^1$

素因数の和:7021

約数の個数: 24

約数和(自身を含む): 43243200

約数和(自身を除く): 22791460

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6863, 13726, 27452, 34315, 68630, 137260, 1022587, 2045174, 4090348, 5112935, 10225870, 20451740]

約数ペア:

[(1, 20451740), (2, 10225870), (4, 5112935), (5, 4090348), (10, 2045174), (20, 1022587), (149, 137260), (298, 68630), (596, 34315), (745, 27452), (1490, 13726), (2980, 6863)]