21870478

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{42221}}^1$

素因数の和:42267

約数の個数: 16

約数和(自身を含む): 38506464

約数和(自身を除く): 16635986

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 42221, 84442, 295547, 591094, 1562177, 3124354, 10935239, 21870478]

約数ペア:

[(1, 21870478), (2, 10935239), (7, 3124354), (14, 1562177), (37, 591094), (74, 295547), (259, 84442), (518, 42221)]