20691891

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4447}}^1$

素因数の和:4511

約数の個数: 24

約数和(自身を含む): 33306624

約数和(自身を除く): 12614733

約数列:

[1, 3, 9, 11, 33, 47, 99, 141, 423, 517, 1551, 4447, 4653, 13341, 40023, 48917, 146751, 209009, 440253, 627027, 1881081, 2299099, 6897297, 20691891]

約数ペア:

[(1, 20691891), (3, 6897297), (9, 2299099), (11, 1881081), (33, 627027), (47, 440253), (99, 209009), (141, 146751), (423, 48917), (517, 40023), (1551, 13341), (4447, 4653)]