20906288

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{100511}}^1$

素因数の和:100532

約数の個数: 20

約数和(自身を含む): 43622208

約数和(自身を除く): 22715920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 100511, 201022, 402044, 804088, 1306643, 1608176, 2613286, 5226572, 10453144, 20906288]

約数ペア:

[(1, 20906288), (2, 10453144), (4, 5226572), (8, 2613286), (13, 1608176), (16, 1306643), (26, 804088), (52, 402044), (104, 201022), (208, 100511)]