28325180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108943}}^1$

素因数の和:108965

約数の個数: 24

約数和(自身を含む): 64059072

約数和(自身を除く): 35733892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108943, 217886, 435772, 544715, 1089430, 1416259, 2178860, 2832518, 5665036, 7081295, 14162590, 28325180]

約数ペア:

[(1, 28325180), (2, 14162590), (4, 7081295), (5, 5665036), (10, 2832518), (13, 2178860), (20, 1416259), (26, 1089430), (52, 544715), (65, 435772), (130, 217886), (260, 108943)]