28144220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108247}}^1$

素因数の和:108269

約数の個数: 24

約数和(自身を含む): 63649824

約数和(自身を除く): 35505604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108247, 216494, 432988, 541235, 1082470, 1407211, 2164940, 2814422, 5628844, 7036055, 14072110, 28144220]

約数ペア:

[(1, 28144220), (2, 14072110), (4, 7036055), (5, 5628844), (10, 2814422), (13, 2164940), (20, 1407211), (26, 1082470), (52, 541235), (65, 432988), (130, 216494), (260, 108247)]