81865557

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{647}}^1\times {\mathrm{827}}^1$

素因数の和:1497

約数の個数: 24

約数和(自身を含む): 125551296

約数和(自身を除く): 43685739

約数列:

[1, 3, 9, 17, 51, 153, 647, 827, 1941, 2481, 5823, 7443, 10999, 14059, 32997, 42177, 98991, 126531, 535069, 1605207, 4815621, 9096173, 27288519, 81865557]

約数ペア:

[(1, 81865557), (3, 27288519), (9, 9096173), (17, 4815621), (51, 1605207), (153, 535069), (647, 126531), (827, 98991), (1941, 42177), (2481, 32997), (5823, 14059), (7443, 10999)]