18920385

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:196

約数の個数: 80

約数和(自身を含む): 38472192

約数和(自身を除く): 19551807

約数列:

[1, 3, 5, 9, 11, 15, 27, 31, 33, 45, 55, 81, 93, 99, 135, 137, 155, 165, 279, 297, 341, 405, 411, 465, 495, 685, 837, 891, 1023, 1233, 1395, 1485, 1507, 1705, 2055, 2511, 3069, 3699, 4185, 4247, 4455, 4521, 5115, 6165, 7535, 9207, 11097, 12555, 12741, 13563, 15345, 18495, 21235, 22605, 27621, 38223, 40689, 46035, 46717, 55485, 63705, 67815, 114669, 122067, 138105, 140151, 191115, 203445, 233585, 344007, 420453, 573345, 610335, 700755, 1261359, 1720035, 2102265, 3784077, 6306795, 18920385]

約数ペア:

[(1, 18920385), (3, 6306795), (5, 3784077), (9, 2102265), (11, 1720035), (15, 1261359), (27, 700755), (31, 610335), (33, 573345), (45, 420453), (55, 344007), (81, 233585), (93, 203445), (99, 191115), (135, 140151), (137, 138105), (155, 122067), (165, 114669), (279, 67815), (297, 63705), (341, 55485), (405, 46717), (411, 46035), (465, 40689), (495, 38223), (685, 27621), (837, 22605), (891, 21235), (1023, 18495), (1233, 15345), (1395, 13563), (1485, 12741), (1507, 12555), (1705, 11097), (2055, 9207), (2511, 7535), (3069, 6165), (3699, 5115), (4185, 4521), (4247, 4455)]