20740293

素因数分解:

$3^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 36167040

約数和(自身を除く): 15426747

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 89, 137, 189, 243, 267, 411, 567, 623, 801, 959, 1233, 1701, 1869, 2403, 2877, 3699, 5607, 7209, 8631, 11097, 12193, 16821, 21627, 25893, 33291, 36579, 50463, 77679, 85351, 109737, 151389, 233037, 256053, 329211, 768159, 987633, 2304477, 2962899, 6913431, 20740293]

約数ペア:

[(1, 20740293), (3, 6913431), (7, 2962899), (9, 2304477), (21, 987633), (27, 768159), (63, 329211), (81, 256053), (89, 233037), (137, 151389), (189, 109737), (243, 85351), (267, 77679), (411, 50463), (567, 36579), (623, 33291), (801, 25893), (959, 21627), (1233, 16821), (1701, 12193), (1869, 11097), (2403, 8631), (2877, 7209), (3699, 5607)]