21904491

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{22193}}^1$

素因数の和:22250

約数の個数: 16

約数和(自身を含む): 34089984

約数和(自身を除く): 12185493

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 22193, 66579, 155351, 466053, 1043071, 3129213, 7301497, 21904491]

約数ペア:

[(1, 21904491), (3, 7301497), (7, 3129213), (21, 1043071), (47, 466053), (141, 155351), (329, 66579), (987, 22193)]