28310620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108887}}^1$

素因数の和:108909

約数の個数: 24

約数和(自身を含む): 64026144

約数和(自身を除く): 35715524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108887, 217774, 435548, 544435, 1088870, 1415531, 2177740, 2831062, 5662124, 7077655, 14155310, 28310620]

約数ペア:

[(1, 28310620), (2, 14155310), (4, 7077655), (5, 5662124), (10, 2831062), (13, 2177740), (20, 1415531), (26, 1088870), (52, 544435), (65, 435548), (130, 217774), (260, 108887)]