27787221

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 50663808

約数和(自身を除く): 22876587

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 101, 231, 303, 397, 693, 707, 909, 1111, 1191, 2121, 2779, 3333, 3573, 4367, 6363, 7777, 8337, 9999, 13101, 23331, 25011, 30569, 39303, 40097, 69993, 91707, 120291, 275121, 280679, 360873, 441067, 842037, 1323201, 2526111, 3087469, 3969603, 9262407, 27787221]

約数ペア:

[(1, 27787221), (3, 9262407), (7, 3969603), (9, 3087469), (11, 2526111), (21, 1323201), (33, 842037), (63, 441067), (77, 360873), (99, 280679), (101, 275121), (231, 120291), (303, 91707), (397, 69993), (693, 40097), (707, 39303), (909, 30569), (1111, 25011), (1191, 23331), (2121, 13101), (2779, 9999), (3333, 8337), (3573, 7777), (4367, 6363)]