18565281

素因数分解:

$3^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:395

約数の個数: 40

約数和(自身を含む): 32060160

約数和(自身を除く): 13494879

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 239, 411, 567, 717, 959, 1233, 1673, 2151, 2877, 3699, 5019, 6453, 8631, 11097, 15057, 19359, 25893, 32743, 45171, 77679, 98229, 135513, 229201, 294687, 687603, 884061, 2062809, 2652183, 6188427, 18565281]

約数ペア:

[(1, 18565281), (3, 6188427), (7, 2652183), (9, 2062809), (21, 884061), (27, 687603), (63, 294687), (81, 229201), (137, 135513), (189, 98229), (239, 77679), (411, 45171), (567, 32743), (717, 25893), (959, 19359), (1233, 15057), (1673, 11097), (2151, 8631), (2877, 6453), (3699, 5019)]