20217765

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{10613}}^1$

素因数の和:10748

約数の個数: 16

約数和(自身を含む): 32606208

約数和(自身を除く): 12388443

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 10613, 31839, 53065, 159195, 1347851, 4043553, 6739255, 20217765]

約数ペア:

[(1, 20217765), (3, 6739255), (5, 4043553), (15, 1347851), (127, 159195), (381, 53065), (635, 31839), (1905, 10613)]