20872000

素因数分解:

$2^6\times 5^3\times {\mathrm{2609}}^1$

素因数の和:2636

約数の個数: 56

約数和(自身を含む): 51709320

約数和(自身を除く): 30837320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 2609, 4000, 5218, 8000, 10436, 13045, 20872, 26090, 41744, 52180, 65225, 83488, 104360, 130450, 166976, 208720, 260900, 326125, 417440, 521800, 652250, 834880, 1043600, 1304500, 2087200, 2609000, 4174400, 5218000, 10436000, 20872000]

約数ペア:

[(1, 20872000), (2, 10436000), (4, 5218000), (5, 4174400), (8, 2609000), (10, 2087200), (16, 1304500), (20, 1043600), (25, 834880), (32, 652250), (40, 521800), (50, 417440), (64, 326125), (80, 260900), (100, 208720), (125, 166976), (160, 130450), (200, 104360), (250, 83488), (320, 65225), (400, 52180), (500, 41744), (800, 26090), (1000, 20872), (1600, 13045), (2000, 10436), (2609, 8000), (4000, 5218)]