21992726

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{42457}}^1$

素因数の和:42503

約数の個数: 16

約数和(自身を含む): 38721696

約数和(自身を除く): 16728970

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 42457, 84914, 297199, 594398, 1570909, 3141818, 10996363, 21992726]

約数ペア:

[(1, 21992726), (2, 10996363), (7, 3141818), (14, 1570909), (37, 594398), (74, 297199), (259, 84914), (518, 42457)]