81503318

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{72901}}^1$

素因数の和:72959

約数の個数: 16

約数和(自身を含む): 134722896

約数和(自身を除く): 53219578

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 72901, 145802, 947713, 1895426, 3134743, 6269486, 40751659, 81503318]

約数ペア:

[(1, 81503318), (2, 40751659), (13, 6269486), (26, 3134743), (43, 1895426), (86, 947713), (559, 145802), (1118, 72901)]