21260181

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{1361}}^1$

素因数の和:1532

約数の個数: 16

約数和(自身を含む): 29288448

約数和(自身を除く): 8028267

約数列:

[1, 3, 41, 123, 127, 381, 1361, 4083, 5207, 15621, 55801, 167403, 172847, 518541, 7086727, 21260181]

約数ペア:

[(1, 21260181), (3, 7086727), (41, 518541), (123, 172847), (127, 167403), (381, 55801), (1361, 15621), (4083, 5207)]