21283160

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3571}}^1$

素因数の和:3731

約数の個数: 32

約数和(自身を含む): 48222000

約数和(自身を除く): 26938840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3571, 5960, 7142, 14284, 17855, 28568, 35710, 71420, 142840, 532079, 1064158, 2128316, 2660395, 4256632, 5320790, 10641580, 21283160]

約数ペア:

[(1, 21283160), (2, 10641580), (4, 5320790), (5, 4256632), (8, 2660395), (10, 2128316), (20, 1064158), (40, 532079), (149, 142840), (298, 71420), (596, 35710), (745, 28568), (1192, 17855), (1490, 14284), (2980, 7142), (3571, 5960)]