21480404

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44381}}^1$

素因数の和:44407

約数の個数: 18

約数和(自身を含む): 41319642

約数和(自身を除く): 19839238

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44381, 88762, 177524, 488191, 976382, 1952764, 5370101, 10740202, 21480404]

約数ペア:

[(1, 21480404), (2, 10740202), (4, 5370101), (11, 1952764), (22, 976382), (44, 488191), (121, 177524), (242, 88762), (484, 44381)]