21998288

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105761}}^1$

素因数の和:105782

約数の個数: 20

約数和(自身を含む): 45900708

約数和(自身を除く): 23902420

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105761, 211522, 423044, 846088, 1374893, 1692176, 2749786, 5499572, 10999144, 21998288]

約数ペア:

[(1, 21998288), (2, 10999144), (4, 5499572), (8, 2749786), (13, 1692176), (16, 1374893), (26, 846088), (52, 423044), (104, 211522), (208, 105761)]