21919491

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:433

約数の個数: 40

約数和(自身を含む): 36317424

約数和(自身を除く): 14397933

約数列:

[1, 3, 9, 11, 27, 33, 73, 81, 99, 219, 297, 337, 657, 803, 891, 1011, 1971, 2409, 3033, 3707, 5913, 7227, 9099, 11121, 21681, 24601, 27297, 33363, 65043, 73803, 100089, 221409, 270611, 300267, 664227, 811833, 1992681, 2435499, 7306497, 21919491]

約数ペア:

[(1, 21919491), (3, 7306497), (9, 2435499), (11, 1992681), (27, 811833), (33, 664227), (73, 300267), (81, 270611), (99, 221409), (219, 100089), (297, 73803), (337, 65043), (657, 33363), (803, 27297), (891, 24601), (1011, 21681), (1971, 11121), (2409, 9099), (3033, 7227), (3707, 5913)]