20509712

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5107}}^1$

素因数の和:5366

約数の個数: 20

約数和(自身を含む): 39903696

約数和(自身を除く): 19393984

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5107, 10214, 20428, 40856, 81712, 1281857, 2563714, 5127428, 10254856, 20509712]

約数ペア:

[(1, 20509712), (2, 10254856), (4, 5127428), (8, 2563714), (16, 1281857), (251, 81712), (502, 40856), (1004, 20428), (2008, 10214), (4016, 5107)]