81487053

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{13781}}^1$

素因数の和:13866

約数の個数: 20

約数和(自身を含む): 123404028

約数和(自身を除く): 41916975

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 5913, 13781, 41343, 124029, 372087, 1006013, 1116261, 3018039, 9054117, 27162351, 81487053]

約数ペア:

[(1, 81487053), (3, 27162351), (9, 9054117), (27, 3018039), (73, 1116261), (81, 1006013), (219, 372087), (657, 124029), (1971, 41343), (5913, 13781)]