21731806

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1\times {\mathrm{857}}^1$

素因数の和:1299

約数の個数: 16

約数和(自身を含む): 33770880

約数和(自身を除く): 12039074

約数列:

[1, 2, 31, 62, 409, 818, 857, 1714, 12679, 25358, 26567, 53134, 350513, 701026, 10865903, 21731806]

約数ペア:

[(1, 21731806), (2, 10865903), (31, 701026), (62, 350513), (409, 53134), (818, 26567), (857, 25358), (1714, 12679)]