21176991

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{631}}^1$

素因数の和:764

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 13406049

約数列:

[1, 3, 9, 11, 27, 33, 99, 113, 297, 339, 631, 1017, 1243, 1893, 3051, 3729, 5679, 6941, 11187, 17037, 20823, 33561, 62469, 71303, 187407, 213909, 641727, 784333, 1925181, 2352999, 7058997, 21176991]

約数ペア:

[(1, 21176991), (3, 7058997), (9, 2352999), (11, 1925181), (27, 784333), (33, 641727), (99, 213909), (113, 187407), (297, 71303), (339, 62469), (631, 33561), (1017, 20823), (1243, 17037), (1893, 11187), (3051, 6941), (3729, 5679)]