16906869

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^2$

素因数の和:214

約数の個数: 36

約数和(自身を含む): 28924896

約数和(自身を除く): 12018027

約数列:

[1, 3, 7, 9, 21, 43, 63, 79, 129, 237, 301, 387, 553, 711, 903, 1659, 2709, 3397, 4977, 6241, 10191, 18723, 23779, 30573, 43687, 56169, 71337, 131061, 214011, 268363, 393183, 805089, 1878541, 2415267, 5635623, 16906869]

約数ペア:

[(1, 16906869), (3, 5635623), (7, 2415267), (9, 1878541), (21, 805089), (43, 393183), (63, 268363), (79, 214011), (129, 131061), (237, 71337), (301, 56169), (387, 43687), (553, 30573), (711, 23779), (903, 18723), (1659, 10191), (2709, 6241), (3397, 4977)]