20694725

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:301

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 5821435

約数列:

[1, 5, 25, 71, 89, 131, 355, 445, 655, 1775, 2225, 3275, 6319, 9301, 11659, 31595, 46505, 58295, 157975, 232525, 291475, 827789, 4138945, 20694725]

約数ペア:

[(1, 20694725), (5, 4138945), (25, 827789), (71, 291475), (89, 232525), (131, 157975), (355, 58295), (445, 46505), (655, 31595), (1775, 11659), (2225, 9301), (3275, 6319)]