18128979

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1229}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 28782000

約数和(自身を除く): 10653021

約数列:

[1, 3, 9, 11, 33, 99, 149, 447, 1229, 1341, 1639, 3687, 4917, 11061, 13519, 14751, 40557, 121671, 183121, 549363, 1648089, 2014331, 6042993, 18128979]

約数ペア:

[(1, 18128979), (3, 6042993), (9, 2014331), (11, 1648089), (33, 549363), (99, 183121), (149, 121671), (447, 40557), (1229, 14751), (1341, 13519), (1639, 11061), (3687, 4917)]