28312180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108893}}^1$

素因数の和:108915

約数の個数: 24

約数和(自身を含む): 64029672

約数和(自身を除く): 35717492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108893, 217786, 435572, 544465, 1088930, 1415609, 2177860, 2831218, 5662436, 7078045, 14156090, 28312180]

約数ペア:

[(1, 28312180), (2, 14156090), (4, 7078045), (5, 5662436), (10, 2831218), (13, 2177860), (20, 1415609), (26, 1088930), (52, 544465), (65, 435572), (130, 217786), (260, 108893)]