21090506

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{10169}}^1$

素因数の和:10249

約数の個数: 16

約数和(自身を含む): 34049160

約数和(自身を除く): 12958654

約数列:

[1, 2, 17, 34, 61, 122, 1037, 2074, 10169, 20338, 172873, 345746, 620309, 1240618, 10545253, 21090506]

約数ペア:

[(1, 21090506), (2, 10545253), (17, 1240618), (34, 620309), (61, 345746), (122, 172873), (1037, 20338), (2074, 10169)]