21476980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153407}}^1$

素因数の和:153423

約数の個数: 24

約数和(自身を含む): 51545088

約数和(自身を除く): 30068108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153407, 306814, 613628, 767035, 1073849, 1534070, 2147698, 3068140, 4295396, 5369245, 10738490, 21476980]

約数ペア:

[(1, 21476980), (2, 10738490), (4, 5369245), (5, 4295396), (7, 3068140), (10, 2147698), (14, 1534070), (20, 1073849), (28, 767035), (35, 613628), (70, 306814), (140, 153407)]