9991107

素因数分解:

$3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 17377536

約数和(自身を除く): 7386429

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 189, 201, 263, 469, 567, 603, 789, 1407, 1809, 1841, 2367, 4221, 5427, 5523, 7101, 12663, 16569, 17621, 21303, 37989, 49707, 52863, 123347, 149121, 158589, 370041, 475767, 1110123, 1427301, 3330369, 9991107]

約数ペア:

[(1, 9991107), (3, 3330369), (7, 1427301), (9, 1110123), (21, 475767), (27, 370041), (63, 158589), (67, 149121), (81, 123347), (189, 52863), (201, 49707), (263, 37989), (469, 21303), (567, 17621), (603, 16569), (789, 12663), (1407, 7101), (1809, 5523), (1841, 5427), (2367, 4221)]