81456005

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1\times {\mathrm{571}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 99225984

約数和(自身を除く): 17769979

約数列:

[1, 5, 103, 277, 515, 571, 1385, 2855, 28531, 58813, 142655, 158167, 294065, 790835, 16291201, 81456005]

約数ペア:

[(1, 81456005), (5, 16291201), (103, 790835), (277, 294065), (515, 158167), (571, 142655), (1385, 58813), (2855, 28531)]