16971885

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 35212320

約数和(自身を除く): 18240435

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 49, 63, 105, 129, 147, 179, 215, 245, 301, 315, 387, 441, 537, 645, 735, 895, 903, 1253, 1505, 1611, 1935, 2107, 2205, 2685, 2709, 3759, 4515, 6265, 6321, 7697, 8055, 8771, 10535, 11277, 13545, 18795, 18963, 23091, 26313, 31605, 38485, 43855, 53879, 56385, 69273, 78939, 94815, 115455, 131565, 161637, 269395, 346365, 377153, 394695, 484911, 808185, 1131459, 1885765, 2424555, 3394377, 5657295, 16971885]

約数ペア:

[(1, 16971885), (3, 5657295), (5, 3394377), (7, 2424555), (9, 1885765), (15, 1131459), (21, 808185), (35, 484911), (43, 394695), (45, 377153), (49, 346365), (63, 269395), (105, 161637), (129, 131565), (147, 115455), (179, 94815), (215, 78939), (245, 69273), (301, 56385), (315, 53879), (387, 43855), (441, 38485), (537, 31605), (645, 26313), (735, 23091), (895, 18963), (903, 18795), (1253, 13545), (1505, 11277), (1611, 10535), (1935, 8771), (2107, 8055), (2205, 7697), (2685, 6321), (2709, 6265), (3759, 4515)]