19992543

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 9424929

約数列:

[1, 3, 23, 37, 41, 69, 111, 123, 191, 573, 851, 943, 1517, 2553, 2829, 4393, 4551, 7067, 7831, 13179, 21201, 23493, 34891, 104673, 162541, 180113, 289747, 487623, 540339, 869241, 6664181, 19992543]

約数ペア:

[(1, 19992543), (3, 6664181), (23, 869241), (37, 540339), (41, 487623), (69, 289747), (111, 180113), (123, 162541), (191, 104673), (573, 34891), (851, 23493), (943, 21201), (1517, 13179), (2553, 7831), (2829, 7067), (4393, 4551)]