20545609

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{701}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 24261120

約数和(自身を除く): 3715511

約数列:

[1, 7, 53, 79, 371, 553, 701, 4187, 4907, 29309, 37153, 55379, 260071, 387653, 2935087, 20545609]

約数ペア:

[(1, 20545609), (7, 2935087), (53, 387653), (79, 260071), (371, 55379), (553, 37153), (701, 29309), (4187, 4907)]