28081820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108007}}^1$

素因数の和:108029

約数の個数: 24

約数和(自身を含む): 63508704

約数和(自身を除く): 35426884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108007, 216014, 432028, 540035, 1080070, 1404091, 2160140, 2808182, 5616364, 7020455, 14040910, 28081820]

約数ペア:

[(1, 28081820), (2, 14040910), (4, 7020455), (5, 5616364), (10, 2808182), (13, 2160140), (20, 1404091), (26, 1080070), (52, 540035), (65, 432028), (130, 216014), (260, 108007)]