51211120

素因数分解:

$2^4\times 5^1\times {\mathrm{640139}}^1$

素因数の和:640152

約数の個数: 20

約数和(自身を含む): 119066040

約数和(自身を除く): 67854920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640139, 1280278, 2560556, 3200695, 5121112, 6401390, 10242224, 12802780, 25605560, 51211120]

約数ペア:

[(1, 51211120), (2, 25605560), (4, 12802780), (5, 10242224), (8, 6401390), (10, 5121112), (16, 3200695), (20, 2560556), (40, 1280278), (80, 640139)]