20522515

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 27010800

約数和(自身を除く): 6488285

約数列:

[1, 5, 13, 65, 149, 163, 169, 745, 815, 845, 1937, 2119, 9685, 10595, 24287, 25181, 27547, 121435, 125905, 137735, 315731, 1578655, 4104503, 20522515]

約数ペア:

[(1, 20522515), (5, 4104503), (13, 1578655), (65, 315731), (149, 137735), (163, 125905), (169, 121435), (745, 27547), (815, 25181), (845, 24287), (1937, 10595), (2119, 9685)]