18720597

素因数分解:

$3^1\times 7^4\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:167

約数の個数: 40

約数和(自身を含む): 30654144

約数和(自身を除く): 11933547

約数列:

[1, 3, 7, 21, 23, 49, 69, 113, 147, 161, 339, 343, 483, 791, 1029, 1127, 2373, 2401, 2599, 3381, 5537, 7203, 7797, 7889, 16611, 18193, 23667, 38759, 54579, 55223, 116277, 127351, 165669, 271313, 382053, 813939, 891457, 2674371, 6240199, 18720597]

約数ペア:

[(1, 18720597), (3, 6240199), (7, 2674371), (21, 891457), (23, 813939), (49, 382053), (69, 271313), (113, 165669), (147, 127351), (161, 116277), (339, 55223), (343, 54579), (483, 38759), (791, 23667), (1029, 18193), (1127, 16611), (2373, 7889), (2401, 7797), (2599, 7203), (3381, 5537)]