20307888976

素因数分解:

$2^4\times {\mathrm{1999}}^1\times {\mathrm{634939}}^1$

素因数の和:636946

約数の個数: 20

約数和(自身を含む): 39366280000

約数和(自身を除く): 19058391024

約数列:

[1, 2, 4, 8, 16, 1999, 3998, 7996, 15992, 31984, 634939, 1269878, 2539756, 5079512, 10159024, 1269243061, 2538486122, 5076972244, 10153944488, 20307888976]

約数ペア:

[(1, 20307888976), (2, 10153944488), (4, 5076972244), (8, 2538486122), (16, 1269243061), (1999, 10159024), (3998, 5079512), (7996, 2539756), (15992, 1269878), (31984, 634939)]