81891608

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{2357}}^1$

素因数の和:2507

約数の個数: 32

約数和(自身を含む): 158740560

約数和(自身を除く): 76848952

約数列:

[1, 2, 4, 8, 43, 86, 101, 172, 202, 344, 404, 808, 2357, 4343, 4714, 8686, 9428, 17372, 18856, 34744, 101351, 202702, 238057, 405404, 476114, 810808, 952228, 1904456, 10236451, 20472902, 40945804, 81891608]

約数ペア:

[(1, 81891608), (2, 40945804), (4, 20472902), (8, 10236451), (43, 1904456), (86, 952228), (101, 810808), (172, 476114), (202, 405404), (344, 238057), (404, 202702), (808, 101351), (2357, 34744), (4343, 18856), (4714, 17372), (8686, 9428)]