18788609

素因数分解:

$7^2\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 22790880

約数和(自身を除く): 4002271

約数列:

[1, 7, 49, 59, 67, 97, 413, 469, 679, 2891, 3283, 3953, 4753, 5723, 6499, 27671, 40061, 45493, 193697, 280427, 318451, 383441, 2684087, 18788609]

約数ペア:

[(1, 18788609), (7, 2684087), (49, 383441), (59, 318451), (67, 280427), (97, 193697), (413, 45493), (469, 40061), (679, 27671), (2891, 6499), (3283, 5723), (3953, 4753)]