21710115

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{41}}^3$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 44081856

約数和(自身を除く): 22371741

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 123, 205, 287, 315, 369, 615, 861, 1435, 1681, 1845, 2583, 4305, 5043, 8405, 11767, 12915, 15129, 25215, 35301, 58835, 68921, 75645, 105903, 176505, 206763, 344605, 482447, 529515, 620289, 1033815, 1447341, 2412235, 3101445, 4342023, 7236705, 21710115]

約数ペア:

[(1, 21710115), (3, 7236705), (5, 4342023), (7, 3101445), (9, 2412235), (15, 1447341), (21, 1033815), (35, 620289), (41, 529515), (45, 482447), (63, 344605), (105, 206763), (123, 176505), (205, 105903), (287, 75645), (315, 68921), (369, 58835), (615, 35301), (861, 25215), (1435, 15129), (1681, 12915), (1845, 11767), (2583, 8405), (4305, 5043)]