221587807

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{691}}^1\times {\mathrm{751}}^1$

素因数の和:1510

約数の個数: 16

約数和(自身を含む): 258110464

約数和(自身を除く): 36522657

約数列:

[1, 7, 61, 427, 691, 751, 4837, 5257, 42151, 45811, 295057, 320677, 518941, 3632587, 31655401, 221587807]

約数ペア:

[(1, 221587807), (7, 31655401), (61, 3632587), (427, 518941), (691, 320677), (751, 295057), (4837, 45811), (5257, 42151)]