85957000

素因数分解:

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

素因数の和:2063

約数の個数: 64

約数和(自身を含む): 205920000

約数和(自身を除く): 119963000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 860, 1000, 1075, 1720, 1999, 2150, 3998, 4300, 5375, 7996, 8600, 9995, 10750, 15992, 19990, 21500, 39980, 43000, 49975, 79960, 85957, 99950, 171914, 199900, 249875, 343828, 399800, 429785, 499750, 687656, 859570, 999500, 1719140, 1999000, 2148925, 3438280, 4297850, 8595700, 10744625, 17191400, 21489250, 42978500, 85957000]

約数ペア:

[(1, 85957000), (2, 42978500), (4, 21489250), (5, 17191400), (8, 10744625), (10, 8595700), (20, 4297850), (25, 3438280), (40, 2148925), (43, 1999000), (50, 1719140), (86, 999500), (100, 859570), (125, 687656), (172, 499750), (200, 429785), (215, 399800), (250, 343828), (344, 249875), (430, 199900), (500, 171914), (860, 99950), (1000, 85957), (1075, 79960), (1720, 49975), (1999, 43000), (2150, 39980), (3998, 21500), (4300, 19990), (5375, 15992), (7996, 10750), (8600, 9995)]