20809785560

素因数分解:

$2^3\times 5^1\times {\mathrm{1627}}^1\times {\mathrm{319757}}^1$

素因数の和:321395

約数の個数: 32

約数和(自身を含む): 46850942160

約数和(自身を除く): 26041156600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1627, 3254, 6508, 8135, 13016, 16270, 32540, 65080, 319757, 639514, 1279028, 1598785, 2558056, 3197570, 6395140, 12790280, 520244639, 1040489278, 2080978556, 2601223195, 4161957112, 5202446390, 10404892780, 20809785560]

約数ペア:

[(1, 20809785560), (2, 10404892780), (4, 5202446390), (5, 4161957112), (8, 2601223195), (10, 2080978556), (20, 1040489278), (40, 520244639), (1627, 12790280), (3254, 6395140), (6508, 3197570), (8135, 2558056), (13016, 1598785), (16270, 1279028), (32540, 639514), (65080, 319757)]