20708020

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6949}}^1$

素因数の和:7107

約数の個数: 24

約数和(自身を含む): 43785000

約数和(自身を除く): 23076980

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6949, 13898, 27796, 34745, 69490, 138980, 1035401, 2070802, 4141604, 5177005, 10354010, 20708020]

約数ペア:

[(1, 20708020), (2, 10354010), (4, 5177005), (5, 4141604), (10, 2070802), (20, 1035401), (149, 138980), (298, 69490), (596, 34745), (745, 27796), (1490, 13898), (2980, 6949)]