21394010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17681}}^1$

素因数の和:17710

約数の個数: 24

約数和(自身を含む): 42330708

約数和(自身を除く): 20936698

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17681, 35362, 88405, 176810, 194491, 388982, 972455, 1944910, 2139401, 4278802, 10697005, 21394010]

約数ペア:

[(1, 21394010), (2, 10697005), (5, 4278802), (10, 2139401), (11, 1944910), (22, 972455), (55, 388982), (110, 194491), (121, 176810), (242, 88405), (605, 35362), (1210, 17681)]