20811505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2239}}^1$

素因数の和:2281

約数の個数: 24

約数和(自身を含む): 29514240

約数和(自身を除く): 8702735

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 2239, 9295, 11195, 24629, 29107, 123145, 145535, 320177, 378391, 1600885, 1891955, 4162301, 20811505]

約数ペア:

[(1, 20811505), (5, 4162301), (11, 1891955), (13, 1600885), (55, 378391), (65, 320177), (143, 145535), (169, 123145), (715, 29107), (845, 24629), (1859, 11195), (2239, 9295)]