215465985

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 473054400

約数和(自身を除く): 257588415

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 37, 45, 49, 57, 63, 95, 105, 111, 133, 139, 147, 171, 185, 245, 259, 285, 315, 333, 399, 417, 441, 555, 665, 695, 703, 735, 777, 855, 931, 973, 1197, 1251, 1295, 1665, 1813, 1995, 2085, 2109, 2205, 2331, 2641, 2793, 2919, 3515, 3885, 4655, 4865, 4921, 5143, 5439, 5985, 6255, 6327, 6811, 7923, 8379, 8757, 9065, 10545, 11655, 13205, 13965, 14595, 14763, 15429, 16317, 18487, 20433, 23769, 24605, 25715, 27195, 31635, 34055, 34447, 36001, 39615, 41895, 43785, 44289, 46287, 55461, 61299, 73815, 77145, 81585, 92435, 97717, 102165, 103341, 108003, 118845, 129409, 166383, 172235, 180005, 221445, 231435, 252007, 277305, 293151, 306495, 310023, 324009, 388227, 488585, 516705, 540015, 647045, 684019, 756021, 831915, 879453, 1164681, 1260035, 1465755, 1550115, 1620045, 1941135, 2052057, 2268063, 3420095, 3780105, 4397265, 4788133, 5823405, 6156171, 10260285, 11340315, 14364399, 23940665, 30780855, 43093197, 71821995, 215465985]

約数ペア:

[(1, 215465985), (3, 71821995), (5, 43093197), (7, 30780855), (9, 23940665), (15, 14364399), (19, 11340315), (21, 10260285), (35, 6156171), (37, 5823405), (45, 4788133), (49, 4397265), (57, 3780105), (63, 3420095), (95, 2268063), (105, 2052057), (111, 1941135), (133, 1620045), (139, 1550115), (147, 1465755), (171, 1260035), (185, 1164681), (245, 879453), (259, 831915), (285, 756021), (315, 684019), (333, 647045), (399, 540015), (417, 516705), (441, 488585), (555, 388227), (665, 324009), (695, 310023), (703, 306495), (735, 293151), (777, 277305), (855, 252007), (931, 231435), (973, 221445), (1197, 180005), (1251, 172235), (1295, 166383), (1665, 129409), (1813, 118845), (1995, 108003), (2085, 103341), (2109, 102165), (2205, 97717), (2331, 92435), (2641, 81585), (2793, 77145), (2919, 73815), (3515, 61299), (3885, 55461), (4655, 46287), (4865, 44289), (4921, 43785), (5143, 41895), (5439, 39615), (5985, 36001), (6255, 34447), (6327, 34055), (6811, 31635), (7923, 27195), (8379, 25715), (8757, 24605), (9065, 23769), (10545, 20433), (11655, 18487), (13205, 16317), (13965, 15429), (14595, 14763)]