21111679

素因数分解:

${\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{661}}^1$

素因数の和:762

約数の個数: 12

約数和(自身を含む): 22812520

約数和(自身を除く): 1700841

約数列:

[1, 19, 41, 661, 779, 1681, 12559, 27101, 31939, 514919, 1111141, 21111679]

約数ペア:

[(1, 21111679), (19, 1111141), (41, 514919), (661, 31939), (779, 27101), (1681, 12559)]