19970457

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{5279}}^1$

素因数の和:5392

約数の個数: 16

約数和(自身を含む): 28976640

約数和(自身を除く): 9006183

約数列:

[1, 3, 13, 39, 97, 291, 1261, 3783, 5279, 15837, 68627, 205881, 512063, 1536189, 6656819, 19970457]

約数ペア:

[(1, 19970457), (3, 6656819), (13, 1536189), (39, 512063), (97, 205881), (291, 68627), (1261, 15837), (3783, 5279)]