28004872

素因数分解:

$2^3\times 7^2\times {\mathrm{199}}^1\times {\mathrm{359}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 61560000

約数和(自身を除く): 33555128

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 199, 359, 392, 398, 718, 796, 1393, 1436, 1592, 2513, 2786, 2872, 5026, 5572, 9751, 10052, 11144, 17591, 19502, 20104, 35182, 39004, 70364, 71441, 78008, 140728, 142882, 285764, 500087, 571528, 1000174, 2000348, 3500609, 4000696, 7001218, 14002436, 28004872]

約数ペア:

[(1, 28004872), (2, 14002436), (4, 7001218), (7, 4000696), (8, 3500609), (14, 2000348), (28, 1000174), (49, 571528), (56, 500087), (98, 285764), (196, 142882), (199, 140728), (359, 78008), (392, 71441), (398, 70364), (718, 39004), (796, 35182), (1393, 20104), (1436, 19502), (1592, 17591), (2513, 11144), (2786, 10052), (2872, 9751), (5026, 5572)]