81583640

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{4463}}^1$

素因数の和:4931

約数の個数: 32

約数和(自身を含む): 184006080

約数和(自身を除く): 102422440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1828, 2285, 3656, 4463, 4570, 8926, 9140, 17852, 18280, 22315, 35704, 44630, 89260, 178520, 2039591, 4079182, 8158364, 10197955, 16316728, 20395910, 40791820, 81583640]

約数ペア:

[(1, 81583640), (2, 40791820), (4, 20395910), (5, 16316728), (8, 10197955), (10, 8158364), (20, 4079182), (40, 2039591), (457, 178520), (914, 89260), (1828, 44630), (2285, 35704), (3656, 22315), (4463, 18280), (4570, 17852), (8926, 9140)]