21810415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{541}}^1\times {\mathrm{733}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 28643616

約数和(自身を除く): 6833201

約数列:

[1, 5, 11, 55, 541, 733, 2705, 3665, 5951, 8063, 29755, 40315, 396553, 1982765, 4362083, 21810415]

約数ペア:

[(1, 21810415), (5, 4362083), (11, 1982765), (55, 396553), (541, 40315), (733, 29755), (2705, 8063), (3665, 5951)]