81217310

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{198091}}^1$

素因数の和:198139

約数の個数: 16

約数和(自身を含む): 149757552

約数和(自身を除く): 68540242

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 198091, 396182, 990455, 1980910, 8121731, 16243462, 40608655, 81217310]

約数ペア:

[(1, 81217310), (2, 40608655), (5, 16243462), (10, 8121731), (41, 1980910), (82, 990455), (205, 396182), (410, 198091)]