21299841

素因数分解:

$3^4\times {\mathrm{439}}^1\times {\mathrm{599}}^1$

素因数の和:1050

約数の個数: 20

約数和(自身を含む): 31944000

約数和(自身を除く): 10644159

約数列:

[1, 3, 9, 27, 81, 439, 599, 1317, 1797, 3951, 5391, 11853, 16173, 35559, 48519, 262961, 788883, 2366649, 7099947, 21299841]

約数ペア:

[(1, 21299841), (3, 7099947), (9, 2366649), (27, 788883), (81, 262961), (439, 48519), (599, 35559), (1317, 16173), (1797, 11853), (3951, 5391)]