20389000

素因数分解:

$2^3\times 5^3\times {\mathrm{20389}}^1$

素因数の和:20410

約数の個数: 32

約数和(自身を含む): 47712600

約数和(自身を除く): 27323600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 20389, 40778, 81556, 101945, 163112, 203890, 407780, 509725, 815560, 1019450, 2038900, 2548625, 4077800, 5097250, 10194500, 20389000]

約数ペア:

[(1, 20389000), (2, 10194500), (4, 5097250), (5, 4077800), (8, 2548625), (10, 2038900), (20, 1019450), (25, 815560), (40, 509725), (50, 407780), (100, 203890), (125, 163112), (200, 101945), (250, 81556), (500, 40778), (1000, 20389)]