21078701

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:944

約数の個数: 16

約数和(自身を含む): 24944640

約数和(自身を除く): 3865939

約数列:

[1, 7, 47, 79, 329, 553, 811, 3713, 5677, 25991, 38117, 64069, 266819, 448483, 3011243, 21078701]

約数ペア:

[(1, 21078701), (7, 3011243), (47, 448483), (79, 266819), (329, 64069), (553, 38117), (811, 25991), (3713, 5677)]