81620905

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{15101}}^1$

素因数の和:15176

約数の個数: 16

約数和(自身を含む): 104385024

約数和(自身を除く): 22764119

約数列:

[1, 5, 23, 47, 115, 235, 1081, 5405, 15101, 75505, 347323, 709747, 1736615, 3548735, 16324181, 81620905]

約数ペア:

[(1, 81620905), (5, 16324181), (23, 3548735), (47, 1736615), (115, 709747), (235, 347323), (1081, 75505), (5405, 15101)]