21252520

素因数分解:

$2^3\times 5^1\times {\mathrm{599}}^1\times {\mathrm{887}}^1$

素因数の和:1497

約数の個数: 32

約数和(自身を含む): 47952000

約数和(自身を除く): 26699480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 599, 887, 1198, 1774, 2396, 2995, 3548, 4435, 4792, 5990, 7096, 8870, 11980, 17740, 23960, 35480, 531313, 1062626, 2125252, 2656565, 4250504, 5313130, 10626260, 21252520]

約数ペア:

[(1, 21252520), (2, 10626260), (4, 5313130), (5, 4250504), (8, 2656565), (10, 2125252), (20, 1062626), (40, 531313), (599, 35480), (887, 23960), (1198, 17740), (1774, 11980), (2396, 8870), (2995, 7096), (3548, 5990), (4435, 4792)]