21481372

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44383}}^1$

素因数の和:44409

約数の個数: 18

約数和(自身を含む): 41321504

約数和(自身を除く): 19840132

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44383, 88766, 177532, 488213, 976426, 1952852, 5370343, 10740686, 21481372]

約数ペア:

[(1, 21481372), (2, 10740686), (4, 5370343), (11, 1952852), (22, 976426), (44, 488213), (121, 177532), (242, 88766), (484, 44383)]