42978500

素因数分解:

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

素因数の和:2061

約数の個数: 48

約数和(自身を含む): 96096000

約数和(自身を除く): 53117500

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 1075, 1999, 2150, 3998, 4300, 5375, 7996, 9995, 10750, 19990, 21500, 39980, 49975, 85957, 99950, 171914, 199900, 249875, 343828, 429785, 499750, 859570, 999500, 1719140, 2148925, 4297850, 8595700, 10744625, 21489250, 42978500]

約数ペア:

[(1, 42978500), (2, 21489250), (4, 10744625), (5, 8595700), (10, 4297850), (20, 2148925), (25, 1719140), (43, 999500), (50, 859570), (86, 499750), (100, 429785), (125, 343828), (172, 249875), (215, 199900), (250, 171914), (430, 99950), (500, 85957), (860, 49975), (1075, 39980), (1999, 21500), (2150, 19990), (3998, 10750), (4300, 9995), (5375, 7996)]