1664170640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1891103}}^1$

素因数の和:1891127

約数の個数: 40

約数和(自身を含む): 4220944128

約数和(自身を除く): 2556773488

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 1891103, 3782206, 7564412, 9455515, 15128824, 18911030, 20802133, 30257648, 37822060, 41604266, 75644120, 83208532, 104010665, 151288240, 166417064, 208021330, 332834128, 416042660, 832085320, 1664170640]

約数ペア:

[(1, 1664170640), (2, 832085320), (4, 416042660), (5, 332834128), (8, 208021330), (10, 166417064), (11, 151288240), (16, 104010665), (20, 83208532), (22, 75644120), (40, 41604266), (44, 37822060), (55, 30257648), (80, 20802133), (88, 18911030), (110, 15128824), (176, 9455515), (220, 7564412), (440, 3782206), (880, 1891103)]