21682070

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{5407}}^1$

素因数の和:5815

約数の個数: 16

約数和(自身を含む): 39132288

約数和(自身を除く): 17450218

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 5407, 10814, 27035, 54070, 2168207, 4336414, 10841035, 21682070]

約数ペア:

[(1, 21682070), (2, 10841035), (5, 4336414), (10, 2168207), (401, 54070), (802, 27035), (2005, 10814), (4010, 5407)]