28663551

素因数分解:

$3^6\times 7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:203

約数の個数: 56

約数和(自身を含む): 50680224

約数和(自身を除く): 22016673

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 81, 123, 137, 189, 243, 287, 369, 411, 567, 729, 861, 959, 1107, 1233, 1701, 2583, 2877, 3321, 3699, 5103, 5617, 7749, 8631, 9963, 11097, 16851, 23247, 25893, 29889, 33291, 39319, 50553, 69741, 77679, 99873, 117957, 151659, 209223, 233037, 353871, 454977, 699111, 1061613, 1364931, 3184839, 4094793, 9554517, 28663551]

約数ペア:

[(1, 28663551), (3, 9554517), (7, 4094793), (9, 3184839), (21, 1364931), (27, 1061613), (41, 699111), (63, 454977), (81, 353871), (123, 233037), (137, 209223), (189, 151659), (243, 117957), (287, 99873), (369, 77679), (411, 69741), (567, 50553), (729, 39319), (861, 33291), (959, 29889), (1107, 25893), (1233, 23247), (1701, 16851), (2583, 11097), (2877, 9963), (3321, 8631), (3699, 7749), (5103, 5617)]