19985847

素因数分解:

$3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{4831}}^1$

素因数の和:5038

約数の個数: 16

約数和(自身を含む): 30615552

約数和(自身を除く): 10629705

約数列:

[1, 3, 7, 21, 197, 591, 1379, 4137, 4831, 14493, 33817, 101451, 951707, 2855121, 6661949, 19985847]

約数ペア:

[(1, 19985847), (3, 6661949), (7, 2855121), (21, 951707), (197, 101451), (591, 33817), (1379, 14493), (4137, 4831)]