19963845

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1301}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 19033659

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1301, 1395, 1705, 3069, 3903, 5115, 6505, 11709, 14311, 15345, 19515, 40331, 42933, 58545, 71555, 120993, 128799, 201655, 214665, 362979, 443641, 604965, 643995, 1330923, 1814895, 2218205, 3992769, 6654615, 19963845]

約数ペア:

[(1, 19963845), (3, 6654615), (5, 3992769), (9, 2218205), (11, 1814895), (15, 1330923), (31, 643995), (33, 604965), (45, 443641), (55, 362979), (93, 214665), (99, 201655), (155, 128799), (165, 120993), (279, 71555), (341, 58545), (465, 42933), (495, 40331), (1023, 19515), (1301, 15345), (1395, 14311), (1705, 11709), (3069, 6505), (3903, 5115)]