81726280

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{3541}}^1$

素因数の和:4129

約数の個数: 32

約数和(自身を含む): 184254840

約数和(自身を除く): 102528560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 1154, 2308, 2885, 3541, 4616, 5770, 7082, 11540, 14164, 17705, 23080, 28328, 35410, 70820, 141640, 2043157, 4086314, 8172628, 10215785, 16345256, 20431570, 40863140, 81726280]

約数ペア:

[(1, 81726280), (2, 40863140), (4, 20431570), (5, 16345256), (8, 10215785), (10, 8172628), (20, 4086314), (40, 2043157), (577, 141640), (1154, 70820), (2308, 35410), (2885, 28328), (3541, 23080), (4616, 17705), (5770, 14164), (7082, 11540)]