18879159

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1619}}^1$

素因数の和:1671

約数の個数: 24

約数和(自身を含む): 28460160

約数和(自身を除く): 9581001

約数列:

[1, 3, 13, 23, 39, 69, 169, 299, 507, 897, 1619, 3887, 4857, 11661, 21047, 37237, 63141, 111711, 273611, 484081, 820833, 1452243, 6293053, 18879159]

約数ペア:

[(1, 18879159), (3, 6293053), (13, 1452243), (23, 820833), (39, 484081), (69, 273611), (169, 111711), (299, 63141), (507, 37237), (897, 21047), (1619, 11661), (3887, 4857)]