21089913

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{857}}^1$

素因数の和:1504

約数の個数: 16

約数和(自身を含む): 30366336

約数和(自身を除く): 9276423

約数列:

[1, 3, 13, 39, 631, 857, 1893, 2571, 8203, 11141, 24609, 33423, 540767, 1622301, 7029971, 21089913]

約数ペア:

[(1, 21089913), (3, 7029971), (13, 1622301), (39, 540767), (631, 33423), (857, 24609), (1893, 11141), (2571, 8203)]