8142940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31319}}^1$

素因数の和:31341

約数の個数: 24

約数和(自身を含む): 18416160

約数和(自身を除く): 10273220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 31319, 62638, 125276, 156595, 313190, 407147, 626380, 814294, 1628588, 2035735, 4071470, 8142940]

約数ペア:

[(1, 8142940), (2, 4071470), (4, 2035735), (5, 1628588), (10, 814294), (13, 626380), (20, 407147), (26, 313190), (52, 156595), (65, 125276), (130, 62638), (260, 31319)]