20568140

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21881}}^1$

素因数の和:21937

約数の個数: 24

約数和(自身を含む): 44114112

約数和(自身を除く): 23545972

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21881, 43762, 87524, 109405, 218810, 437620, 1028407, 2056814, 4113628, 5142035, 10284070, 20568140]

約数ペア:

[(1, 20568140), (2, 10284070), (4, 5142035), (5, 4113628), (10, 2056814), (20, 1028407), (47, 437620), (94, 218810), (188, 109405), (235, 87524), (470, 43762), (940, 21881)]