2801240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5387}}^1$

素因数の和:5411

約数の個数: 32

約数和(自身を含む): 6788880

約数和(自身を除く): 3987640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 5387, 10774, 21548, 26935, 43096, 53870, 70031, 107740, 140062, 215480, 280124, 350155, 560248, 700310, 1400620, 2801240]

約数ペア:

[(1, 2801240), (2, 1400620), (4, 700310), (5, 560248), (8, 350155), (10, 280124), (13, 215480), (20, 140062), (26, 107740), (40, 70031), (52, 53870), (65, 43096), (104, 26935), (130, 21548), (260, 10774), (520, 5387)]