28508193

素因数分解:

$3^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 49158912

約数和(自身を除く): 20650719

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 367, 411, 567, 959, 1101, 1233, 2569, 2877, 3303, 3699, 7707, 8631, 9909, 11097, 23121, 25893, 29727, 50279, 69363, 77679, 150837, 208089, 351953, 452511, 1055859, 1357533, 3167577, 4072599, 9502731, 28508193]

約数ペア:

[(1, 28508193), (3, 9502731), (7, 4072599), (9, 3167577), (21, 1357533), (27, 1055859), (63, 452511), (81, 351953), (137, 208089), (189, 150837), (367, 77679), (411, 69363), (567, 50279), (959, 29727), (1101, 25893), (1233, 23121), (2569, 11097), (2877, 9909), (3303, 8631), (3699, 7707)]