19509261

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 27549792

約数和(自身を除く): 8040531

約数列:

[1, 3, 31, 67, 93, 101, 201, 303, 961, 2077, 2883, 3131, 6231, 6767, 9393, 20301, 64387, 97061, 193161, 209777, 291183, 629331, 6503087, 19509261]

約数ペア:

[(1, 19509261), (3, 6503087), (31, 629331), (67, 291183), (93, 209777), (101, 193161), (201, 97061), (303, 64387), (961, 20301), (2077, 9393), (2883, 6767), (3131, 6231)]