81477981

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{77377}}^1$

素因数の和:77402

約数の個数: 20

約数和(自身を含む): 131078332

約数和(自身を除く): 49600351

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 77377, 232131, 696393, 1005901, 2089179, 3017703, 6267537, 9053109, 27159327, 81477981]

約数ペア:

[(1, 81477981), (3, 27159327), (9, 9053109), (13, 6267537), (27, 3017703), (39, 2089179), (81, 1005901), (117, 696393), (351, 232131), (1053, 77377)]