20918615

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1801}}^1$

素因数の和:1930

約数の個数: 16

約数和(自身を含む): 26467776

約数和(自身を除く): 5549161

約数列:

[1, 5, 23, 101, 115, 505, 1801, 2323, 9005, 11615, 41423, 181901, 207115, 909505, 4183723, 20918615]

約数ペア:

[(1, 20918615), (5, 4183723), (23, 909505), (101, 207115), (115, 181901), (505, 41423), (1801, 11615), (2323, 9005)]