312403720

素因数分解:

$2^3\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{3907}}^1$

素因数の和:5917

約数の個数: 32

約数和(自身を含む): 703440000

約数和(自身を除く): 391036280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1999, 3907, 3998, 7814, 7996, 9995, 15628, 15992, 19535, 19990, 31256, 39070, 39980, 78140, 79960, 156280, 7810093, 15620186, 31240372, 39050465, 62480744, 78100930, 156201860, 312403720]

約数ペア:

[(1, 312403720), (2, 156201860), (4, 78100930), (5, 62480744), (8, 39050465), (10, 31240372), (20, 15620186), (40, 7810093), (1999, 156280), (3907, 79960), (3998, 78140), (7814, 39980), (7996, 39070), (9995, 31256), (15628, 19990), (15992, 19535)]