20720180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79693}}^1$

素因数の和:79715

約数の個数: 24

約数和(自身を含む): 46860072

約数和(自身を除く): 26139892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79693, 159386, 318772, 398465, 796930, 1036009, 1593860, 2072018, 4144036, 5180045, 10360090, 20720180]

約数ペア:

[(1, 20720180), (2, 10360090), (4, 5180045), (5, 4144036), (10, 2072018), (13, 1593860), (20, 1036009), (26, 796930), (52, 398465), (65, 318772), (130, 159386), (260, 79693)]