655850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1009}}^1$

素因数の和:1034

約数の個数: 24

約数和(自身を含む): 1315020

約数和(自身を除く): 659170

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 1009, 2018, 5045, 10090, 13117, 25225, 26234, 50450, 65585, 131170, 327925, 655850]

約数ペア:

[(1, 655850), (2, 327925), (5, 131170), (10, 65585), (13, 50450), (25, 26234), (26, 25225), (50, 13117), (65, 10090), (130, 5045), (325, 2018), (650, 1009)]