21099416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202879}}^1$

素因数の和:202898

約数の個数: 16

約数和(自身を含む): 42604800

約数和(自身を除く): 21505384

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202879, 405758, 811516, 1623032, 2637427, 5274854, 10549708, 21099416]

約数ペア:

[(1, 21099416), (2, 10549708), (4, 5274854), (8, 2637427), (13, 1623032), (26, 811516), (52, 405758), (104, 202879)]