18780138

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4721}}^1$

素因数の和:4759

約数の個数: 48

約数和(自身を含む): 46407816

約数和(自身を除く): 27627678

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 4721, 9442, 14163, 28326, 42489, 61373, 80257, 84978, 122746, 160514, 184119, 240771, 368238, 481542, 552357, 722313, 1043341, 1104714, 1444626, 2086682, 3130023, 6260046, 9390069, 18780138]

約数ペア:

[(1, 18780138), (2, 9390069), (3, 6260046), (6, 3130023), (9, 2086682), (13, 1444626), (17, 1104714), (18, 1043341), (26, 722313), (34, 552357), (39, 481542), (51, 368238), (78, 240771), (102, 184119), (117, 160514), (153, 122746), (221, 84978), (234, 80257), (306, 61373), (442, 42489), (663, 28326), (1326, 14163), (1989, 9442), (3978, 4721)]