18867915

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{811}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 36481536

約数和(自身を除く): 17613621

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 47, 55, 99, 141, 165, 235, 423, 495, 517, 705, 811, 1551, 2115, 2433, 2585, 4055, 4653, 7299, 7755, 8921, 12165, 23265, 26763, 36495, 38117, 44605, 80289, 114351, 133815, 190585, 343053, 401445, 419287, 571755, 1257861, 1715265, 2096435, 3773583, 6289305, 18867915]

約数ペア:

[(1, 18867915), (3, 6289305), (5, 3773583), (9, 2096435), (11, 1715265), (15, 1257861), (33, 571755), (45, 419287), (47, 401445), (55, 343053), (99, 190585), (141, 133815), (165, 114351), (235, 80289), (423, 44605), (495, 38117), (517, 36495), (705, 26763), (811, 23265), (1551, 12165), (2115, 8921), (2433, 7755), (2585, 7299), (4055, 4653)]