20766400

素因数分解:

$2^6\times 5^2\times {\mathrm{12979}}^1$

素因数の和:13001

約数の個数: 42

約数和(自身を含む): 51102260

約数和(自身を除く): 30335860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12979, 25958, 51916, 64895, 103832, 129790, 207664, 259580, 324475, 415328, 519160, 648950, 830656, 1038320, 1297900, 2076640, 2595800, 4153280, 5191600, 10383200, 20766400]

約数ペア:

[(1, 20766400), (2, 10383200), (4, 5191600), (5, 4153280), (8, 2595800), (10, 2076640), (16, 1297900), (20, 1038320), (25, 830656), (32, 648950), (40, 519160), (50, 415328), (64, 324475), (80, 259580), (100, 207664), (160, 129790), (200, 103832), (320, 64895), (400, 51916), (800, 25958), (1600, 12979)]