21242793

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{293}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 33586560

約数和(自身を除く): 12343767

約数列:

[1, 3, 11, 13, 33, 39, 143, 169, 293, 429, 507, 879, 1859, 2197, 3223, 3809, 5577, 6591, 9669, 11427, 24167, 41899, 49517, 72501, 125697, 148551, 544687, 643721, 1634061, 1931163, 7080931, 21242793]

約数ペア:

[(1, 21242793), (3, 7080931), (11, 1931163), (13, 1634061), (33, 643721), (39, 544687), (143, 148551), (169, 125697), (293, 72501), (429, 49517), (507, 41899), (879, 24167), (1859, 11427), (2197, 9669), (3223, 6591), (3809, 5577)]