21699713

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 25534080

約数和(自身を除く): 3834367

約数列:

[1, 7, 61, 89, 427, 571, 623, 3997, 5429, 34831, 38003, 50819, 243817, 355733, 3099959, 21699713]

約数ペア:

[(1, 21699713), (7, 3099959), (61, 355733), (89, 243817), (427, 50819), (571, 38003), (623, 34831), (3997, 5429)]