20320381

素因数分解:

${\mathrm{43}}^1\times {\mathrm{61}}^2\times {\mathrm{127}}^1$

素因数の和:292

約数の個数: 12

約数和(自身を含む): 21305856

約数和(自身を除く): 985475

約数列:

[1, 43, 61, 127, 2623, 3721, 5461, 7747, 160003, 333121, 472567, 20320381]

約数ペア:

[(1, 20320381), (43, 472567), (61, 333121), (127, 160003), (2623, 7747), (3721, 5461)]