21021754

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18803}}^1$

素因数の和:18861

約数の個数: 16

約数和(自身を含む): 34749792

約数和(自身を除く): 13728038

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 18803, 37606, 244439, 488878, 808529, 1617058, 10510877, 21021754]

約数ペア:

[(1, 21021754), (2, 10510877), (13, 1617058), (26, 808529), (43, 488878), (86, 244439), (559, 37606), (1118, 18803)]