78893480

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{3541}}^1$

素因数の和:4109

約数の個数: 32

約数和(自身を含む): 177879240

約数和(自身を除く): 98985760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 2228, 2785, 3541, 4456, 5570, 7082, 11140, 14164, 17705, 22280, 28328, 35410, 70820, 141640, 1972337, 3944674, 7889348, 9861685, 15778696, 19723370, 39446740, 78893480]

約数ペア:

[(1, 78893480), (2, 39446740), (4, 19723370), (5, 15778696), (8, 9861685), (10, 7889348), (20, 3944674), (40, 1972337), (557, 141640), (1114, 70820), (2228, 35410), (2785, 28328), (3541, 22280), (4456, 17705), (5570, 14164), (7082, 11140)]