20196580

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1019}}^1$

素因数の和:2019

約数の個数: 24

約数和(自身を含む): 42497280

約数和(自身を除く): 22300700

約数列:

[1, 2, 4, 5, 10, 20, 991, 1019, 1982, 2038, 3964, 4076, 4955, 5095, 9910, 10190, 19820, 20380, 1009829, 2019658, 4039316, 5049145, 10098290, 20196580]

約数ペア:

[(1, 20196580), (2, 10098290), (4, 5049145), (5, 4039316), (10, 2019658), (20, 1009829), (991, 20380), (1019, 19820), (1982, 10190), (2038, 9910), (3964, 5095), (4076, 4955)]