28129409

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3617}}^1$

素因数の和:3736

約数の個数: 16

約数和(自身を含む): 35427456

約数和(自身を除く): 7298047

約数列:

[1, 7, 11, 77, 101, 707, 1111, 3617, 7777, 25319, 39787, 278509, 365317, 2557219, 4018487, 28129409]

約数ペア:

[(1, 28129409), (7, 4018487), (11, 2557219), (77, 365317), (101, 278509), (707, 39787), (1111, 25319), (3617, 7777)]