20417649

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3167}}^1$

素因数の和:3484

約数の個数: 16

約数和(自身を含む): 31223808

約数和(自身を除く): 10806159

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3167, 6447, 9501, 22169, 66507, 972269, 2916807, 6805883, 20417649]

約数ペア:

[(1, 20417649), (3, 6805883), (7, 2916807), (21, 972269), (307, 66507), (921, 22169), (2149, 9501), (3167, 6447)]