19518345

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:203

約数の個数: 96

約数和(自身を含む): 43490304

約数和(自身を除く): 23971959

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 43, 45, 55, 63, 77, 99, 105, 129, 131, 165, 215, 231, 301, 315, 385, 387, 393, 473, 495, 645, 655, 693, 903, 917, 1155, 1179, 1419, 1441, 1505, 1935, 1965, 2365, 2709, 2751, 3311, 3465, 4257, 4323, 4515, 4585, 5633, 5895, 7095, 7205, 8253, 9933, 10087, 12969, 13545, 13755, 16555, 16899, 21285, 21615, 28165, 29799, 30261, 39431, 41265, 49665, 50435, 50697, 61963, 64845, 84495, 90783, 118293, 148995, 151305, 185889, 197155, 253485, 309815, 354879, 433741, 453915, 557667, 591465, 929445, 1301223, 1774395, 2168705, 2788335, 3903669, 6506115, 19518345]

約数ペア:

[(1, 19518345), (3, 6506115), (5, 3903669), (7, 2788335), (9, 2168705), (11, 1774395), (15, 1301223), (21, 929445), (33, 591465), (35, 557667), (43, 453915), (45, 433741), (55, 354879), (63, 309815), (77, 253485), (99, 197155), (105, 185889), (129, 151305), (131, 148995), (165, 118293), (215, 90783), (231, 84495), (301, 64845), (315, 61963), (385, 50697), (387, 50435), (393, 49665), (473, 41265), (495, 39431), (645, 30261), (655, 29799), (693, 28165), (903, 21615), (917, 21285), (1155, 16899), (1179, 16555), (1419, 13755), (1441, 13545), (1505, 12969), (1935, 10087), (1965, 9933), (2365, 8253), (2709, 7205), (2751, 7095), (3311, 5895), (3465, 5633), (4257, 4585), (4323, 4515)]