81564327

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2671}}^1$

素因数の和:2725

約数の個数: 40

約数和(自身を含む): 135791040

約数和(自身を除く): 54226713

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 783, 1053, 1131, 2349, 2671, 3393, 8013, 10179, 24039, 30537, 34723, 72117, 77459, 104169, 216351, 232377, 312507, 697131, 937521, 1006967, 2091393, 2812563, 3020901, 6274179, 9062703, 27188109, 81564327]

約数ペア:

[(1, 81564327), (3, 27188109), (9, 9062703), (13, 6274179), (27, 3020901), (29, 2812563), (39, 2091393), (81, 1006967), (87, 937521), (117, 697131), (261, 312507), (351, 232377), (377, 216351), (783, 104169), (1053, 77459), (1131, 72117), (2349, 34723), (2671, 30537), (3393, 24039), (8013, 10179)]