21107216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101477}}^1$

素因数の和:101498

約数の個数: 20

約数和(自身を含む): 44041452

約数和(自身を除く): 22934236

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101477, 202954, 405908, 811816, 1319201, 1623632, 2638402, 5276804, 10553608, 21107216]

約数ペア:

[(1, 21107216), (2, 10553608), (4, 5276804), (8, 2638402), (13, 1623632), (16, 1319201), (26, 811816), (52, 405908), (104, 202954), (208, 101477)]