18501178

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{1091}}^1$

素因数の和:1293

約数の個数: 16

約数和(自身を含む): 28435680

約数和(自身を除く): 9934502

約数列:

[1, 2, 61, 122, 139, 278, 1091, 2182, 8479, 16958, 66551, 133102, 151649, 303298, 9250589, 18501178]

約数ペア:

[(1, 18501178), (2, 9250589), (61, 303298), (122, 151649), (139, 133102), (278, 66551), (1091, 16958), (2182, 8479)]