20115459

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2729}}^1$

素因数の和:2761

約数の個数: 40

約数和(自身を含む): 36996960

約数和(自身を除く): 16881501

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2729, 7371, 8187, 19103, 24561, 35477, 57309, 73683, 106431, 171927, 221049, 248339, 319293, 515781, 745017, 957879, 1547343, 2235051, 2873637, 6705153, 20115459]

約数ペア:

[(1, 20115459), (3, 6705153), (7, 2873637), (9, 2235051), (13, 1547343), (21, 957879), (27, 745017), (39, 515781), (63, 319293), (81, 248339), (91, 221049), (117, 171927), (189, 106431), (273, 73683), (351, 57309), (567, 35477), (819, 24561), (1053, 19103), (2457, 8187), (2729, 7371)]