21478000

素因数分解:

$2^4\times 5^3\times {\mathrm{10739}}^1$

素因数の和:10762

約数の個数: 40

約数和(自身を含む): 51938640

約数和(自身を除く): 30460640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10739, 21478, 42956, 53695, 85912, 107390, 171824, 214780, 268475, 429560, 536950, 859120, 1073900, 1342375, 2147800, 2684750, 4295600, 5369500, 10739000, 21478000]

約数ペア:

[(1, 21478000), (2, 10739000), (4, 5369500), (5, 4295600), (8, 2684750), (10, 2147800), (16, 1342375), (20, 1073900), (25, 859120), (40, 536950), (50, 429560), (80, 268475), (100, 214780), (125, 171824), (200, 107390), (250, 85912), (400, 53695), (500, 42956), (1000, 21478), (2000, 10739)]