81042080

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10337}}^1$

素因数の和:10366

約数の個数: 72

約数和(自身を含む): 222742548

約数和(自身を除く): 141700468

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10337, 20674, 41348, 51685, 72359, 82696, 103370, 144718, 165392, 206740, 289436, 330784, 361795, 413480, 506513, 578872, 723590, 826960, 1013026, 1157744, 1447180, 1653920, 2026052, 2315488, 2532565, 2894360, 4052104, 5065130, 5788720, 8104208, 10130260, 11577440, 16208416, 20260520, 40521040, 81042080]

約数ペア:

[(1, 81042080), (2, 40521040), (4, 20260520), (5, 16208416), (7, 11577440), (8, 10130260), (10, 8104208), (14, 5788720), (16, 5065130), (20, 4052104), (28, 2894360), (32, 2532565), (35, 2315488), (40, 2026052), (49, 1653920), (56, 1447180), (70, 1157744), (80, 1013026), (98, 826960), (112, 723590), (140, 578872), (160, 506513), (196, 413480), (224, 361795), (245, 330784), (280, 289436), (392, 206740), (490, 165392), (560, 144718), (784, 103370), (980, 82696), (1120, 72359), (1568, 51685), (1960, 41348), (3920, 20674), (7840, 10337)]