3438280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2053

約数の個数: 32

約数和(自身を含む): 7920000

約数和(自身を除く): 4481720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1999, 3998, 7996, 9995, 15992, 19990, 39980, 79960, 85957, 171914, 343828, 429785, 687656, 859570, 1719140, 3438280]

約数ペア:

[(1, 3438280), (2, 1719140), (4, 859570), (5, 687656), (8, 429785), (10, 343828), (20, 171914), (40, 85957), (43, 79960), (86, 39980), (172, 19990), (215, 15992), (344, 9995), (430, 7996), (860, 3998), (1720, 1999)]