78919040

素因数分解:

$2^7\times 5^1\times {\mathrm{123311}}^1$

素因数の和:123330

約数の個数: 32

約数和(自身を含む): 188667360

約数和(自身を除く): 109748320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123311, 246622, 493244, 616555, 986488, 1233110, 1972976, 2466220, 3945952, 4932440, 7891904, 9864880, 15783808, 19729760, 39459520, 78919040]

約数ペア:

[(1, 78919040), (2, 39459520), (4, 19729760), (5, 15783808), (8, 9864880), (10, 7891904), (16, 4932440), (20, 3945952), (32, 2466220), (40, 1972976), (64, 1233110), (80, 986488), (128, 616555), (160, 493244), (320, 246622), (640, 123311)]