78485480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47857}}^1$

素因数の和:47909

約数の個数: 32

約数和(自身を含む): 180903240

約数和(自身を除く): 102417760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 47857, 95714, 191428, 239285, 382856, 478570, 957140, 1914280, 1962137, 3924274, 7848548, 9810685, 15697096, 19621370, 39242740, 78485480]

約数ペア:

[(1, 78485480), (2, 39242740), (4, 19621370), (5, 15697096), (8, 9810685), (10, 7848548), (20, 3924274), (40, 1962137), (41, 1914280), (82, 957140), (164, 478570), (205, 382856), (328, 239285), (410, 191428), (820, 95714), (1640, 47857)]