257070723

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 436423680

約数和(自身を除く): 179352957

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 109, 159, 163, 273, 327, 371, 489, 689, 763, 1113, 1141, 1417, 2067, 2119, 2289, 3423, 4251, 4823, 5777, 6357, 8639, 9919, 14469, 14833, 17331, 17767, 25917, 29757, 40439, 44499, 53301, 60473, 75101, 112307, 121317, 124369, 181419, 225303, 230971, 336921, 373107, 525707, 692913, 786149, 941651, 1577121, 1616797, 2358447, 2824953, 4850391, 6591557, 12241463, 19774671, 36724389, 85690241, 257070723]

約数ペア:

[(1, 257070723), (3, 85690241), (7, 36724389), (13, 19774671), (21, 12241463), (39, 6591557), (53, 4850391), (91, 2824953), (109, 2358447), (159, 1616797), (163, 1577121), (273, 941651), (327, 786149), (371, 692913), (489, 525707), (689, 373107), (763, 336921), (1113, 230971), (1141, 225303), (1417, 181419), (2067, 124369), (2119, 121317), (2289, 112307), (3423, 75101), (4251, 60473), (4823, 53301), (5777, 44499), (6357, 40439), (8639, 29757), (9919, 25917), (14469, 17767), (14833, 17331)]