21519135

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 42831360

約数和(自身を除く): 21312225

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 43, 45, 55, 99, 129, 135, 165, 215, 297, 337, 387, 473, 495, 645, 1011, 1161, 1419, 1485, 1685, 1935, 2365, 3033, 3707, 4257, 5055, 5805, 7095, 9099, 11121, 12771, 14491, 15165, 18535, 21285, 33363, 43473, 45495, 55605, 63855, 72455, 100089, 130419, 159401, 166815, 217365, 391257, 478203, 500445, 652095, 797005, 1434609, 1956285, 2391015, 4303827, 7173045, 21519135]

約数ペア:

[(1, 21519135), (3, 7173045), (5, 4303827), (9, 2391015), (11, 1956285), (15, 1434609), (27, 797005), (33, 652095), (43, 500445), (45, 478203), (55, 391257), (99, 217365), (129, 166815), (135, 159401), (165, 130419), (215, 100089), (297, 72455), (337, 63855), (387, 55605), (473, 45495), (495, 43473), (645, 33363), (1011, 21285), (1161, 18535), (1419, 15165), (1485, 14491), (1685, 12771), (1935, 11121), (2365, 9099), (3033, 7095), (3707, 5805), (4257, 5055)]