18109959

素因数分解:

$3^1\times 7^2\times {\mathrm{349}}^1\times {\mathrm{353}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 28249200

約数和(自身を除く): 10139241

約数列:

[1, 3, 7, 21, 49, 147, 349, 353, 1047, 1059, 2443, 2471, 7329, 7413, 17101, 17297, 51303, 51891, 123197, 369591, 862379, 2587137, 6036653, 18109959]

約数ペア:

[(1, 18109959), (3, 6036653), (7, 2587137), (21, 862379), (49, 369591), (147, 123197), (349, 51891), (353, 51303), (1047, 17297), (1059, 17101), (2443, 7413), (2471, 7329)]