21000317740

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10194329}}^1$

素因数の和:10194441

約数の個数: 24

約数和(自身を含む): 44528833440

約数和(自身を除く): 23528515700

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10194329, 20388658, 40777316, 50971645, 101943290, 203886580, 1050015887, 2100031774, 4200063548, 5250079435, 10500158870, 21000317740]

約数ペア:

[(1, 21000317740), (2, 10500158870), (4, 5250079435), (5, 4200063548), (10, 2100031774), (20, 1050015887), (103, 203886580), (206, 101943290), (412, 50971645), (515, 40777316), (1030, 20388658), (2060, 10194329)]