20125989

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 34000512

約数和(自身を除く): 13874523

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 243, 277, 299, 351, 621, 831, 897, 1053, 1863, 2493, 2691, 3159, 3601, 5589, 6371, 7479, 8073, 10803, 19113, 22437, 24219, 32409, 57339, 67311, 72657, 82823, 97227, 172017, 248469, 291681, 516051, 745407, 875043, 1548153, 2236221, 6708663, 20125989]

約数ペア:

[(1, 20125989), (3, 6708663), (9, 2236221), (13, 1548153), (23, 875043), (27, 745407), (39, 516051), (69, 291681), (81, 248469), (117, 172017), (207, 97227), (243, 82823), (277, 72657), (299, 67311), (351, 57339), (621, 32409), (831, 24219), (897, 22437), (1053, 19113), (1863, 10803), (2493, 8073), (2691, 7479), (3159, 6371), (3601, 5589)]