81266080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72559}}^1$

素因数の和:72581

約数の個数: 48

約数和(自身を含む): 219421440

約数和(自身を除く): 138155360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72559, 145118, 290236, 362795, 507913, 580472, 725590, 1015826, 1160944, 1451180, 2031652, 2321888, 2539565, 2902360, 4063304, 5079130, 5804720, 8126608, 10158260, 11609440, 16253216, 20316520, 40633040, 81266080]

約数ペア:

[(1, 81266080), (2, 40633040), (4, 20316520), (5, 16253216), (7, 11609440), (8, 10158260), (10, 8126608), (14, 5804720), (16, 5079130), (20, 4063304), (28, 2902360), (32, 2539565), (35, 2321888), (40, 2031652), (56, 1451180), (70, 1160944), (80, 1015826), (112, 725590), (140, 580472), (160, 507913), (224, 362795), (280, 290236), (560, 145118), (1120, 72559)]