20181071728

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{7738141}}^1$

素因数の和:7738312

約数の個数: 20

約数和(自身を含む): 39340713928

約数和(自身を除く): 19159642200

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 7738141, 15476282, 30952564, 61905128, 123810256, 1261316983, 2522633966, 5045267932, 10090535864, 20181071728]

約数ペア:

[(1, 20181071728), (2, 10090535864), (4, 5045267932), (8, 2522633966), (16, 1261316983), (163, 123810256), (326, 61905128), (652, 30952564), (1304, 15476282), (2608, 7738141)]