21689393

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{661}}^1$

素因数の和:848

約数の個数: 16

約数和(自身を含む): 25103040

約数和(自身を除く): 3413647

約数列:

[1, 11, 19, 157, 209, 661, 1727, 2983, 7271, 12559, 32813, 103777, 138149, 1141547, 1971763, 21689393]

約数ペア:

[(1, 21689393), (11, 1971763), (19, 1141547), (157, 138149), (209, 103777), (661, 32813), (1727, 12559), (2983, 7271)]