2819180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1549}}^1$

素因数の和:1578

約数の個数: 48

約数和(自身を含む): 7291200

約数和(自身を除く): 4472020

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1549, 1820, 3098, 6196, 7745, 10843, 15490, 20137, 21686, 30980, 40274, 43372, 54215, 80548, 100685, 108430, 140959, 201370, 216860, 281918, 402740, 563836, 704795, 1409590, 2819180]

約数ペア:

[(1, 2819180), (2, 1409590), (4, 704795), (5, 563836), (7, 402740), (10, 281918), (13, 216860), (14, 201370), (20, 140959), (26, 108430), (28, 100685), (35, 80548), (52, 54215), (65, 43372), (70, 40274), (91, 30980), (130, 21686), (140, 20137), (182, 15490), (260, 10843), (364, 7745), (455, 6196), (910, 3098), (1549, 1820)]