20550730

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:678

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18329270

約数列:

[1, 2, 5, 10, 23, 46, 115, 199, 230, 398, 449, 898, 995, 1990, 2245, 4490, 4577, 9154, 10327, 20654, 22885, 45770, 51635, 89351, 103270, 178702, 446755, 893510, 2055073, 4110146, 10275365, 20550730]

約数ペア:

[(1, 20550730), (2, 10275365), (5, 4110146), (10, 2055073), (23, 893510), (46, 446755), (115, 178702), (199, 103270), (230, 89351), (398, 51635), (449, 45770), (898, 22885), (995, 20654), (1990, 10327), (2245, 9154), (4490, 4577)]