20993990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29569}}^1$

素因数の和:29647

約数の個数: 16

約数和(自身を含む): 38322720

約数和(自身を除く): 17328730

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29569, 59138, 147845, 295690, 2099399, 4198798, 10496995, 20993990]

約数ペア:

[(1, 20993990), (2, 10496995), (5, 4198798), (10, 2099399), (71, 295690), (142, 147845), (355, 59138), (710, 29569)]