81031040

素因数分解:

$2^7\times 5^1\times {\mathrm{126611}}^1$

素因数の和:126630

約数の個数: 32

約数和(自身を含む): 193716360

約数和(自身を除く): 112685320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126611, 253222, 506444, 633055, 1012888, 1266110, 2025776, 2532220, 4051552, 5064440, 8103104, 10128880, 16206208, 20257760, 40515520, 81031040]

約数ペア:

[(1, 81031040), (2, 40515520), (4, 20257760), (5, 16206208), (8, 10128880), (10, 8103104), (16, 5064440), (20, 4051552), (32, 2532220), (40, 2025776), (64, 1266110), (80, 1012888), (128, 633055), (160, 506444), (320, 253222), (640, 126611)]