20837000

素因数分解:

$2^3\times 5^3\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 28808440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 67, 100, 125, 134, 200, 250, 268, 311, 335, 500, 536, 622, 670, 1000, 1244, 1340, 1555, 1675, 2488, 2680, 3110, 3350, 6220, 6700, 7775, 8375, 12440, 13400, 15550, 16750, 20837, 31100, 33500, 38875, 41674, 62200, 67000, 77750, 83348, 104185, 155500, 166696, 208370, 311000, 416740, 520925, 833480, 1041850, 2083700, 2604625, 4167400, 5209250, 10418500, 20837000]

約数ペア:

[(1, 20837000), (2, 10418500), (4, 5209250), (5, 4167400), (8, 2604625), (10, 2083700), (20, 1041850), (25, 833480), (40, 520925), (50, 416740), (67, 311000), (100, 208370), (125, 166696), (134, 155500), (200, 104185), (250, 83348), (268, 77750), (311, 67000), (335, 62200), (500, 41674), (536, 38875), (622, 33500), (670, 31100), (1000, 20837), (1244, 16750), (1340, 15550), (1555, 13400), (1675, 12440), (2488, 8375), (2680, 7775), (3110, 6700), (3350, 6220)]