21358467

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7937}}^1$

素因数の和:7979

約数の個数: 24

約数和(自身を含む): 34673184

約数和(自身を除く): 13314717

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7937, 23811, 71433, 103181, 182551, 309543, 547653, 928629, 1642959, 2373163, 7119489, 21358467]

約数ペア:

[(1, 21358467), (3, 7119489), (9, 2373163), (13, 1642959), (23, 928629), (39, 547653), (69, 309543), (117, 182551), (207, 103181), (299, 71433), (897, 23811), (2691, 7937)]