21035426

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{4451}}^1$

素因数の和:4609

約数の個数: 16

約数和(自身を含む): 33657120

約数和(自身を除く): 12621694

約数列:

[1, 2, 17, 34, 139, 278, 2363, 4451, 4726, 8902, 75667, 151334, 618689, 1237378, 10517713, 21035426]

約数ペア:

[(1, 21035426), (2, 10517713), (17, 1237378), (34, 618689), (139, 151334), (278, 75667), (2363, 8902), (4451, 4726)]