18978520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43133}}^1$

素因数の和:43155

約数の個数: 32

約数和(自身を含む): 46584720

約数和(自身を除く): 27606200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 43133, 86266, 172532, 215665, 345064, 431330, 474463, 862660, 948926, 1725320, 1897852, 2372315, 3795704, 4744630, 9489260, 18978520]

約数ペア:

[(1, 18978520), (2, 9489260), (4, 4744630), (5, 3795704), (8, 2372315), (10, 1897852), (11, 1725320), (20, 948926), (22, 862660), (40, 474463), (44, 431330), (55, 345064), (88, 215665), (110, 172532), (220, 86266), (440, 43133)]