21215019

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{11351}}^1$

素因数の和:11450

約数の個数: 16

約数和(自身を含む): 32693760

約数和(自身を除く): 11478741

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 11351, 34053, 79457, 238371, 1010239, 3030717, 7071673, 21215019]

約数ペア:

[(1, 21215019), (3, 7071673), (7, 3030717), (21, 1010239), (89, 238371), (267, 79457), (623, 34053), (1869, 11351)]