28220660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108541}}^1$

素因数の和:108563

約数の個数: 24

約数和(自身を含む): 63822696

約数和(自身を除く): 35602036

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108541, 217082, 434164, 542705, 1085410, 1411033, 2170820, 2822066, 5644132, 7055165, 14110330, 28220660]

約数ペア:

[(1, 28220660), (2, 14110330), (4, 7055165), (5, 5644132), (10, 2822066), (13, 2170820), (20, 1411033), (26, 1085410), (52, 542705), (65, 434164), (130, 217082), (260, 108541)]