889431640

素因数分解:

$2^3\times 5^1\times {\mathrm{1697}}^1\times {\mathrm{13103}}^1$

素因数の和:14811

約数の個数: 32

約数和(自身を含む): 2002553280

約数和(自身を除く): 1113121640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1697, 3394, 6788, 8485, 13103, 13576, 16970, 26206, 33940, 52412, 65515, 67880, 104824, 131030, 262060, 524120, 22235791, 44471582, 88943164, 111178955, 177886328, 222357910, 444715820, 889431640]

約数ペア:

[(1, 889431640), (2, 444715820), (4, 222357910), (5, 177886328), (8, 111178955), (10, 88943164), (20, 44471582), (40, 22235791), (1697, 524120), (3394, 262060), (6788, 131030), (8485, 104824), (13103, 67880), (13576, 65515), (16970, 52412), (26206, 33940)]