7972940

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3947}}^1$

素因数の和:4057

約数の個数: 24

約数和(自身を含む): 16913232

約数和(自身を除く): 8940292

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 3947, 7894, 15788, 19735, 39470, 78940, 398647, 797294, 1594588, 1993235, 3986470, 7972940]

約数ペア:

[(1, 7972940), (2, 3986470), (4, 1993235), (5, 1594588), (10, 797294), (20, 398647), (101, 78940), (202, 39470), (404, 19735), (505, 15788), (1010, 7894), (2020, 3947)]