12991815

素因数分解:

$3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{643}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 22604400

約数和(自身を除く): 9612585

約数列:

[1, 3, 5, 9, 15, 45, 449, 643, 1347, 1929, 2245, 3215, 4041, 5787, 6735, 9645, 20205, 28935, 288707, 866121, 1443535, 2598363, 4330605, 12991815]

約数ペア:

[(1, 12991815), (3, 4330605), (5, 2598363), (9, 1443535), (15, 866121), (45, 288707), (449, 28935), (643, 20205), (1347, 9645), (1929, 6735), (2245, 5787), (3215, 4041)]