19994559

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{349}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 29206800

約数和(自身を除く): 9212241

約数列:

[1, 3, 13, 39, 113, 169, 339, 349, 507, 1047, 1469, 4407, 4537, 13611, 19097, 39437, 57291, 58981, 118311, 176943, 512681, 1538043, 6664853, 19994559]

約数ペア:

[(1, 19994559), (3, 6664853), (13, 1538043), (39, 512681), (113, 176943), (169, 118311), (339, 58981), (349, 57291), (507, 39437), (1047, 19097), (1469, 13611), (4407, 4537)]