21017590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1217}}^1$

素因数の和:1392

約数の個数: 32

約数和(自身を含む): 41567904

約数和(自身を除く): 20550314

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 157, 314, 785, 1217, 1570, 1727, 2434, 3454, 6085, 8635, 12170, 13387, 17270, 26774, 66935, 133870, 191069, 382138, 955345, 1910690, 2101759, 4203518, 10508795, 21017590]

約数ペア:

[(1, 21017590), (2, 10508795), (5, 4203518), (10, 2101759), (11, 1910690), (22, 955345), (55, 382138), (110, 191069), (157, 133870), (314, 66935), (785, 26774), (1217, 17270), (1570, 13387), (1727, 12170), (2434, 8635), (3454, 6085)]