28550907

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:501

約数の個数: 64

約数和(自身を含む): 54558720

約数和(自身を除く): 26007813

約数列:

[1, 3, 7, 9, 11, 21, 27, 31, 33, 63, 77, 93, 99, 189, 217, 231, 279, 297, 341, 443, 651, 693, 837, 1023, 1329, 1953, 2079, 2387, 3069, 3101, 3987, 4873, 5859, 7161, 9207, 9303, 11961, 13733, 14619, 21483, 27909, 34111, 41199, 43857, 64449, 83727, 96131, 102333, 123597, 131571, 151063, 288393, 306999, 370791, 453189, 865179, 920997, 1057441, 1359567, 2595537, 3172323, 4078701, 9516969, 28550907]

約数ペア:

[(1, 28550907), (3, 9516969), (7, 4078701), (9, 3172323), (11, 2595537), (21, 1359567), (27, 1057441), (31, 920997), (33, 865179), (63, 453189), (77, 370791), (93, 306999), (99, 288393), (189, 151063), (217, 131571), (231, 123597), (279, 102333), (297, 96131), (341, 83727), (443, 64449), (651, 43857), (693, 41199), (837, 34111), (1023, 27909), (1329, 21483), (1953, 14619), (2079, 13733), (2387, 11961), (3069, 9303), (3101, 9207), (3987, 7161), (4873, 5859)]