13681719

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 21071232

約数和(自身を除く): 7389513

約数列:

[1, 3, 9, 17, 51, 153, 223, 401, 669, 1203, 2007, 3609, 3791, 6817, 11373, 20451, 34119, 61353, 89423, 268269, 804807, 1520191, 4560573, 13681719]

約数ペア:

[(1, 13681719), (3, 4560573), (9, 1520191), (17, 804807), (51, 268269), (153, 89423), (223, 61353), (401, 34119), (669, 20451), (1203, 11373), (2007, 6817), (3609, 3791)]