21245393

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{383}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 24385536

約数和(自身を除く): 3140143

約数列:

[1, 13, 17, 221, 251, 383, 3263, 4267, 4979, 6511, 55471, 84643, 96133, 1249729, 1634261, 21245393]

約数ペア:

[(1, 21245393), (13, 1634261), (17, 1249729), (221, 96133), (251, 84643), (383, 55471), (3263, 6511), (4267, 4979)]