21161535

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1811}}^1$

素因数の和:1879

約数の個数: 32

約数和(自身を含む): 36529920

約数和(自身を除く): 15368385

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 285, 615, 779, 1811, 2337, 3895, 5433, 9055, 11685, 27165, 34409, 74251, 103227, 172045, 222753, 371255, 516135, 1113765, 1410769, 4232307, 7053845, 21161535]

約数ペア:

[(1, 21161535), (3, 7053845), (5, 4232307), (15, 1410769), (19, 1113765), (41, 516135), (57, 371255), (95, 222753), (123, 172045), (205, 103227), (285, 74251), (615, 34409), (779, 27165), (1811, 11685), (2337, 9055), (3895, 5433)]