20485670

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19889}}^1$

素因数の和:19999

約数の個数: 16

約数和(自身を含む): 37234080

約数和(自身を除く): 16748410

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19889, 39778, 99445, 198890, 2048567, 4097134, 10242835, 20485670]

約数ペア:

[(1, 20485670), (2, 10242835), (5, 4097134), (10, 2048567), (103, 198890), (206, 99445), (515, 39778), (1030, 19889)]