21158045

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{733}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 26635392

約数和(自身を除く): 5477347

約数列:

[1, 5, 23, 115, 251, 733, 1255, 3665, 5773, 16859, 28865, 84295, 183983, 919915, 4231609, 21158045]

約数ペア:

[(1, 21158045), (5, 4231609), (23, 919915), (115, 183983), (251, 84295), (733, 28865), (1255, 16859), (3665, 5773)]