20950479

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{491}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 33156864

約数和(自身を除く): 12206385

約数列:

[1, 3, 9, 11, 33, 99, 431, 491, 1293, 1473, 3879, 4419, 4741, 5401, 14223, 16203, 42669, 48609, 211621, 634863, 1904589, 2327831, 6983493, 20950479]

約数ペア:

[(1, 20950479), (3, 6983493), (9, 2327831), (11, 1904589), (33, 634863), (99, 211621), (431, 48609), (491, 42669), (1293, 16203), (1473, 14223), (3879, 5401), (4419, 4741)]