21753251

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{383}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 24966144

約数和(自身を除く): 3212893

約数列:

[1, 13, 17, 221, 257, 383, 3341, 4369, 4979, 6511, 56797, 84643, 98431, 1279603, 1673327, 21753251]

約数ペア:

[(1, 21753251), (13, 1673327), (17, 1279603), (221, 98431), (257, 84643), (383, 56797), (3341, 6511), (4369, 4979)]