21020884

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{821}}^1$

素因数の和:1035

約数の個数: 24

約数和(自身を含む): 38045448

約数和(自身を除く): 17024564

約数列:

[1, 2, 4, 37, 74, 148, 173, 346, 692, 821, 1642, 3284, 6401, 12802, 25604, 30377, 60754, 121508, 142033, 284066, 568132, 5255221, 10510442, 21020884]

約数ペア:

[(1, 21020884), (2, 10510442), (4, 5255221), (37, 568132), (74, 284066), (148, 142033), (173, 121508), (346, 60754), (692, 30377), (821, 25604), (1642, 12802), (3284, 6401)]