21708463

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1409}}^1$

素因数の和:1518

約数の個数: 16

約数和(自身を含む): 25989120

約数和(自身を除く): 4280657

約数列:

[1, 7, 31, 71, 217, 497, 1409, 2201, 9863, 15407, 43679, 100039, 305753, 700273, 3101209, 21708463]

約数ペア:

[(1, 21708463), (7, 3101209), (31, 700273), (71, 305753), (217, 100039), (497, 43679), (1409, 15407), (2201, 9863)]