39786920

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2557}}^1$

素因数の和:2957

約数の個数: 32

約数和(自身を含む): 89785800

約数和(自身を除く): 49998880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 2557, 3112, 3890, 5114, 7780, 10228, 12785, 15560, 20456, 25570, 51140, 102280, 994673, 1989346, 3978692, 4973365, 7957384, 9946730, 19893460, 39786920]

約数ペア:

[(1, 39786920), (2, 19893460), (4, 9946730), (5, 7957384), (8, 4973365), (10, 3978692), (20, 1989346), (40, 994673), (389, 102280), (778, 51140), (1556, 25570), (1945, 20456), (2557, 15560), (3112, 12785), (3890, 10228), (5114, 7780)]