21161427

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6763}}^1$

素因数の和:6922

約数の個数: 16

約数和(自身を含む): 32467200

約数和(自身を除く): 11305773

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6763, 20289, 47341, 142023, 1007687, 3023061, 7053809, 21161427]

約数ペア:

[(1, 21161427), (3, 7053809), (7, 3023061), (21, 1007687), (149, 142023), (447, 47341), (1043, 20289), (3129, 6763)]