81911480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292541}}^1$

素因数の和:292559

約数の個数: 32

約数和(自身を含む): 210630240

約数和(自身を除く): 128718760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292541, 585082, 1170164, 1462705, 2047787, 2340328, 2925410, 4095574, 5850820, 8191148, 10238935, 11701640, 16382296, 20477870, 40955740, 81911480]

約数ペア:

[(1, 81911480), (2, 40955740), (4, 20477870), (5, 16382296), (7, 11701640), (8, 10238935), (10, 8191148), (14, 5850820), (20, 4095574), (28, 2925410), (35, 2340328), (40, 2047787), (56, 1462705), (70, 1170164), (140, 585082), (280, 292541)]