18680228

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{21521}}^1$

素因数の和:21563

約数の個数: 24

約数和(自身を含む): 38567424

約数和(自身を除く): 19887196

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 21521, 43042, 86084, 150647, 301294, 602588, 667151, 1334302, 2668604, 4670057, 9340114, 18680228]

約数ペア:

[(1, 18680228), (2, 9340114), (4, 4670057), (7, 2668604), (14, 1334302), (28, 667151), (31, 602588), (62, 301294), (124, 150647), (217, 86084), (434, 43042), (868, 21521)]