18203913

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 34406400

約数和(自身を除く): 16202487

約数列:

[1, 3, 7, 9, 13, 21, 27, 31, 39, 63, 91, 93, 117, 189, 217, 239, 273, 279, 351, 403, 651, 717, 819, 837, 1209, 1673, 1953, 2151, 2457, 2821, 3107, 3627, 5019, 5859, 6453, 7409, 8463, 9321, 10881, 15057, 21749, 22227, 25389, 27963, 45171, 51863, 65247, 66681, 76167, 83889, 96317, 155589, 195741, 200043, 288951, 466767, 587223, 674219, 866853, 1400301, 2022657, 2600559, 6067971, 18203913]

約数ペア:

[(1, 18203913), (3, 6067971), (7, 2600559), (9, 2022657), (13, 1400301), (21, 866853), (27, 674219), (31, 587223), (39, 466767), (63, 288951), (91, 200043), (93, 195741), (117, 155589), (189, 96317), (217, 83889), (239, 76167), (273, 66681), (279, 65247), (351, 51863), (403, 45171), (651, 27963), (717, 25389), (819, 22227), (837, 21749), (1209, 15057), (1673, 10881), (1953, 9321), (2151, 8463), (2457, 7409), (2821, 6453), (3107, 5859), (3627, 5019)]