21035905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{3943}}^1$

素因数の和:4056

約数の個数: 16

約数和(自身を含む): 27828864

約数和(自身を除く): 6792959

約数列:

[1, 5, 11, 55, 97, 485, 1067, 3943, 5335, 19715, 43373, 216865, 382471, 1912355, 4207181, 21035905]

約数ペア:

[(1, 21035905), (5, 4207181), (11, 1912355), (55, 382471), (97, 216865), (485, 43373), (1067, 19715), (3943, 5335)]