81032320

素因数分解:

$2^7\times 5^1\times {\mathrm{126613}}^1$

素因数の和:126632

約数の個数: 32

約数和(自身を含む): 193719420

約数和(自身を除く): 112687100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126613, 253226, 506452, 633065, 1012904, 1266130, 2025808, 2532260, 4051616, 5064520, 8103232, 10129040, 16206464, 20258080, 40516160, 81032320]

約数ペア:

[(1, 81032320), (2, 40516160), (4, 20258080), (5, 16206464), (8, 10129040), (10, 8103232), (16, 5064520), (20, 4051616), (32, 2532260), (40, 2025808), (64, 1266130), (80, 1012904), (128, 633065), (160, 506452), (320, 253226), (640, 126613)]