78386980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{559907}}^1$

素因数の和:559923

約数の個数: 24

約数和(自身を含む): 188129088

約数和(自身を除く): 109742108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 559907, 1119814, 2239628, 2799535, 3919349, 5599070, 7838698, 11198140, 15677396, 19596745, 39193490, 78386980]

約数ペア:

[(1, 78386980), (2, 39193490), (4, 19596745), (5, 15677396), (7, 11198140), (10, 7838698), (14, 5599070), (20, 3919349), (28, 2799535), (35, 2239628), (70, 1119814), (140, 559907)]