19928493

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2399}}^1$

素因数の和:2489

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 11521107

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2399, 2769, 7197, 8307, 21591, 31187, 93561, 170329, 280683, 510987, 1532961, 2214277, 6642831, 19928493]

約数ペア:

[(1, 19928493), (3, 6642831), (9, 2214277), (13, 1532961), (39, 510987), (71, 280683), (117, 170329), (213, 93561), (639, 31187), (923, 21591), (2399, 8307), (2769, 7197)]