18877761

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3793}}^1$

素因数の和:3885

約数の個数: 24

約数和(自身を含む): 31566080

約数和(自身を除く): 12688319

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 3793, 4977, 11379, 26551, 34137, 79653, 238959, 299647, 898941, 2097529, 2696823, 6292587, 18877761]

約数ペア:

[(1, 18877761), (3, 6292587), (7, 2696823), (9, 2097529), (21, 898941), (63, 299647), (79, 238959), (237, 79653), (553, 34137), (711, 26551), (1659, 11379), (3793, 4977)]