81690687

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3373}}^1$

素因数の和:3421

約数の個数: 40

約数和(自身を含む): 137173344

約数和(自身を除く): 55482657

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 299, 351, 621, 897, 1053, 1863, 2691, 3373, 8073, 10119, 24219, 30357, 43849, 77579, 91071, 131547, 232737, 273213, 394641, 698211, 1008527, 1183923, 2094633, 3025581, 3551769, 6283899, 9076743, 27230229, 81690687]

約数ペア:

[(1, 81690687), (3, 27230229), (9, 9076743), (13, 6283899), (23, 3551769), (27, 3025581), (39, 2094633), (69, 1183923), (81, 1008527), (117, 698211), (207, 394641), (299, 273213), (351, 232737), (621, 131547), (897, 91071), (1053, 77579), (1863, 43849), (2691, 30357), (3373, 24219), (8073, 10119)]