19560915

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{919}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 37889280

約数和(自身を除く): 18328365

約数列:

[1, 3, 5, 9, 11, 15, 33, 43, 45, 55, 99, 129, 165, 215, 387, 473, 495, 645, 919, 1419, 1935, 2365, 2757, 4257, 4595, 7095, 8271, 10109, 13785, 21285, 30327, 39517, 41355, 50545, 90981, 118551, 151635, 197585, 355653, 434687, 454905, 592755, 1304061, 1778265, 2173435, 3912183, 6520305, 19560915]

約数ペア:

[(1, 19560915), (3, 6520305), (5, 3912183), (9, 2173435), (11, 1778265), (15, 1304061), (33, 592755), (43, 454905), (45, 434687), (55, 355653), (99, 197585), (129, 151635), (165, 118551), (215, 90981), (387, 50545), (473, 41355), (495, 39517), (645, 30327), (919, 21285), (1419, 13785), (1935, 10109), (2365, 8271), (2757, 7095), (4257, 4595)]