21025899

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8951}}^1$

素因数の和:8992

約数の個数: 20

約数和(自身を含む): 32495760

約数和(自身を除く): 11469861

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8951, 26853, 80559, 241677, 259579, 725031, 778737, 2336211, 7008633, 21025899]

約数ペア:

[(1, 21025899), (3, 7008633), (9, 2336211), (27, 778737), (29, 725031), (81, 259579), (87, 241677), (261, 80559), (783, 26853), (2349, 8951)]