18620985

素因数分解:

$3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{7907}}^1$

素因数の和:8072

約数の個数: 16

約数和(自身を含む): 29987136

約数和(自身を除く): 11366151

約数列:

[1, 3, 5, 15, 157, 471, 785, 2355, 7907, 23721, 39535, 118605, 1241399, 3724197, 6206995, 18620985]

約数ペア:

[(1, 18620985), (3, 6206995), (5, 3724197), (15, 1241399), (157, 118605), (471, 39535), (785, 23721), (2355, 7907)]