21523280

素因数分解:

$2^4\times 5^1\times {\mathrm{269041}}^1$

素因数の和:269054

約数の個数: 20

約数和(自身を含む): 50041812

約数和(自身を除く): 28518532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269041, 538082, 1076164, 1345205, 2152328, 2690410, 4304656, 5380820, 10761640, 21523280]

約数ペア:

[(1, 21523280), (2, 10761640), (4, 5380820), (5, 4304656), (8, 2690410), (10, 2152328), (16, 1345205), (20, 1076164), (40, 538082), (80, 269041)]