9947721

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1543}}^1$

素因数の和:1860

約数の個数: 16

約数和(自身を含む): 15217664

約数和(自身を除く): 5269943

約数列:

[1, 3, 7, 21, 307, 921, 1543, 2149, 4629, 6447, 10801, 32403, 473701, 1421103, 3315907, 9947721]

約数ペア:

[(1, 9947721), (3, 3315907), (7, 1421103), (21, 473701), (307, 32403), (921, 10801), (1543, 6447), (2149, 4629)]