19843733

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 26880000

約数和(自身を除く): 7036267

約数列:

[1, 7, 13, 19, 23, 91, 133, 161, 247, 299, 437, 499, 1729, 2093, 3059, 3493, 5681, 6487, 9481, 11477, 39767, 45409, 66367, 80339, 123253, 149201, 218063, 862771, 1044407, 1526441, 2834819, 19843733]

約数ペア:

[(1, 19843733), (7, 2834819), (13, 1526441), (19, 1044407), (23, 862771), (91, 218063), (133, 149201), (161, 123253), (247, 80339), (299, 66367), (437, 45409), (499, 39767), (1729, 11477), (2093, 9481), (3059, 6487), (3493, 5681)]