21329776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102547}}^1$

素因数の和:102568

約数の個数: 20

約数和(自身を含む): 44505832

約数和(自身を除く): 23176056

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102547, 205094, 410188, 820376, 1333111, 1640752, 2666222, 5332444, 10664888, 21329776]

約数ペア:

[(1, 21329776), (2, 10664888), (4, 5332444), (8, 2666222), (13, 1640752), (16, 1333111), (26, 820376), (52, 410188), (104, 205094), (208, 102547)]