19805038

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{81839}}^1$

素因数の和:81863

約数の個数: 12

約数和(自身を含む): 32654160

約数和(自身を除く): 12849122

約数列:

[1, 2, 11, 22, 121, 242, 81839, 163678, 900229, 1800458, 9902519, 19805038]

約数ペア:

[(1, 19805038), (2, 9902519), (11, 1800458), (22, 900229), (121, 163678), (242, 81839)]