18554913

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 30410688

約数和(自身を除く): 11855775

約数列:

[1, 3, 9, 13, 27, 39, 67, 81, 117, 201, 263, 351, 603, 789, 871, 1053, 1809, 2367, 2613, 3419, 5427, 7101, 7839, 10257, 17621, 21303, 23517, 30771, 52863, 70551, 92313, 158589, 229073, 276939, 475767, 687219, 1427301, 2061657, 6184971, 18554913]

約数ペア:

[(1, 18554913), (3, 6184971), (9, 2061657), (13, 1427301), (27, 687219), (39, 475767), (67, 276939), (81, 229073), (117, 158589), (201, 92313), (263, 70551), (351, 52863), (603, 30771), (789, 23517), (871, 21303), (1053, 17621), (1809, 10257), (2367, 7839), (2613, 7101), (3419, 5427)]