205057420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{1999}}^1$

素因数の和:2254

約数の個数: 48

約数和(自身を含む): 451584000

約数和(自身を除く): 246526580

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 223, 230, 446, 460, 892, 1115, 1999, 2230, 3998, 4460, 5129, 7996, 9995, 10258, 19990, 20516, 25645, 39980, 45977, 51290, 91954, 102580, 183908, 229885, 445777, 459770, 891554, 919540, 1783108, 2228885, 4457770, 8915540, 10252871, 20505742, 41011484, 51264355, 102528710, 205057420]

約数ペア:

[(1, 205057420), (2, 102528710), (4, 51264355), (5, 41011484), (10, 20505742), (20, 10252871), (23, 8915540), (46, 4457770), (92, 2228885), (115, 1783108), (223, 919540), (230, 891554), (446, 459770), (460, 445777), (892, 229885), (1115, 183908), (1999, 102580), (2230, 91954), (3998, 51290), (4460, 45977), (5129, 39980), (7996, 25645), (9995, 20516), (10258, 19990)]