20808808

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{42641}}^1$

素因数の和:42708

約数の個数: 16

約数和(自身を含む): 39657060

約数和(自身を除く): 18848252

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 42641, 85282, 170564, 341128, 2601101, 5202202, 10404404, 20808808]

約数ペア:

[(1, 20808808), (2, 10404404), (4, 5202202), (8, 2601101), (61, 341128), (122, 170564), (244, 85282), (488, 42641)]