13216815

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2113}}^1$

素因数の和:2263

約数の個数: 24

約数和(自身を含む): 23084880

約数和(自身を除く): 9868065

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 2113, 6255, 6339, 10565, 19017, 31695, 95085, 293707, 881121, 1468535, 2643363, 4405605, 13216815]

約数ペア:

[(1, 13216815), (3, 4405605), (5, 2643363), (9, 1468535), (15, 881121), (45, 293707), (139, 95085), (417, 31695), (695, 19017), (1251, 10565), (2085, 6339), (2113, 6255)]