20981625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{7993}}^1$

素因数の和:8018

約数の個数: 32

約数和(自身を含む): 39906048

約数和(自身を除く): 18924423

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 875, 2625, 7993, 23979, 39965, 55951, 119895, 167853, 199825, 279755, 599475, 839265, 999125, 1398775, 2997375, 4196325, 6993875, 20981625]

約数ペア:

[(1, 20981625), (3, 6993875), (5, 4196325), (7, 2997375), (15, 1398775), (21, 999125), (25, 839265), (35, 599475), (75, 279755), (105, 199825), (125, 167853), (175, 119895), (375, 55951), (525, 39965), (875, 23979), (2625, 7993)]