20997009

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{6427}}^1$

素因数の和:6458

約数の個数: 24

約数和(自身を含む): 34196960

約数和(自身を除く): 13199951

約数列:

[1, 3, 9, 11, 27, 33, 99, 121, 297, 363, 1089, 3267, 6427, 19281, 57843, 70697, 173529, 212091, 636273, 777667, 1908819, 2333001, 6999003, 20997009]

約数ペア:

[(1, 20997009), (3, 6999003), (9, 2333001), (11, 1908819), (27, 777667), (33, 636273), (99, 212091), (121, 173529), (297, 70697), (363, 57843), (1089, 19281), (3267, 6427)]