81421119

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{77323}}^1$

素因数の和:77348

約数の個数: 20

約数和(自身を含む): 130986856

約数和(自身を除く): 49565737

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 77323, 231969, 695907, 1005199, 2087721, 3015597, 6263163, 9046791, 27140373, 81421119]

約数ペア:

[(1, 81421119), (3, 27140373), (9, 9046791), (13, 6263163), (27, 3015597), (39, 2087721), (81, 1005199), (117, 695907), (351, 231969), (1053, 77323)]