18986474

素因数分解:

$2^1\times {\mathrm{13}}^3\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 32130000

約数和(自身を除く): 13143526

約数列:

[1, 2, 13, 26, 29, 58, 149, 169, 298, 338, 377, 754, 1937, 2197, 3874, 4321, 4394, 4901, 8642, 9802, 25181, 50362, 56173, 63713, 112346, 127426, 327353, 654706, 730249, 1460498, 9493237, 18986474]

約数ペア:

[(1, 18986474), (2, 9493237), (13, 1460498), (26, 730249), (29, 654706), (58, 327353), (149, 127426), (169, 112346), (298, 63713), (338, 56173), (377, 50362), (754, 25181), (1937, 9802), (2197, 8642), (3874, 4901), (4321, 4394)]