15871992040

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{617107}}^1$

素因数の和:617761

約数の個数: 32

約数和(自身を含む): 35767579680

約数和(自身を除く): 19895587640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860, 25720, 617107, 1234214, 2468428, 3085535, 4936856, 6171070, 12342140, 24684280, 396799801, 793599602, 1587199204, 1983999005, 3174398408, 3967998010, 7935996020, 15871992040]

約数ペア:

[(1, 15871992040), (2, 7935996020), (4, 3967998010), (5, 3174398408), (8, 1983999005), (10, 1587199204), (20, 793599602), (40, 396799801), (643, 24684280), (1286, 12342140), (2572, 6171070), (3215, 4936856), (5144, 3085535), (6430, 2468428), (12860, 1234214), (25720, 617107)]