21267873

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{709}}^1$

素因数の和:830

約数の個数: 32

約数和(自身を含む): 34761600

約数和(自身を除く): 13493727

約数列:

[1, 3, 9, 11, 27, 33, 99, 101, 297, 303, 709, 909, 1111, 2127, 2727, 3333, 6381, 7799, 9999, 19143, 23397, 29997, 70191, 71609, 210573, 214827, 644481, 787699, 1933443, 2363097, 7089291, 21267873]

約数ペア:

[(1, 21267873), (3, 7089291), (9, 2363097), (11, 1933443), (27, 787699), (33, 644481), (99, 214827), (101, 210573), (297, 71609), (303, 70191), (709, 29997), (909, 23397), (1111, 19143), (2127, 9999), (2727, 7799), (3333, 6381)]