21000368642

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{9451111}}^1$

素因数の和:9451225

約数の個数: 16

約数和(自身を含む): 34704483264

約数和(自身を除く): 13704114622

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 9451111, 18902222, 103962221, 207924442, 954562211, 1909124422, 10500184321, 21000368642]

約数ペア:

[(1, 21000368642), (2, 10500184321), (11, 1909124422), (22, 954562211), (101, 207924442), (202, 103962221), (1111, 18902222), (2222, 9451111)]