21724227

素因数分解:

$3^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{839}}^1$

素因数の和:992

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 15370173

約数列:

[1, 3, 7, 9, 21, 27, 63, 137, 189, 411, 839, 959, 1233, 2517, 2877, 3699, 5873, 7551, 8631, 17619, 22653, 25893, 52857, 114943, 158571, 344829, 804601, 1034487, 2413803, 3103461, 7241409, 21724227]

約数ペア:

[(1, 21724227), (3, 7241409), (7, 3103461), (9, 2413803), (21, 1034487), (27, 804601), (63, 344829), (137, 158571), (189, 114943), (411, 52857), (839, 25893), (959, 22653), (1233, 17619), (2517, 8631), (2877, 7551), (3699, 5873)]