21960057

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 34771968

約数和(自身を除く): 12811911

約数列:

[1, 3, 7, 21, 43, 83, 129, 249, 293, 301, 581, 879, 903, 1743, 2051, 3569, 6153, 10707, 12599, 24319, 24983, 37797, 72957, 74949, 88193, 170233, 264579, 510699, 1045717, 3137151, 7320019, 21960057]

約数ペア:

[(1, 21960057), (3, 7320019), (7, 3137151), (21, 1045717), (43, 510699), (83, 264579), (129, 170233), (249, 88193), (293, 74949), (301, 72957), (581, 37797), (879, 24983), (903, 24319), (1743, 12599), (2051, 10707), (3569, 6153)]