21216620

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8353}}^1$

素因数の和:8489

約数の個数: 24

約数和(自身を含む): 44911104

約数和(自身を除く): 23694484

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8353, 16706, 33412, 41765, 83530, 167060, 1060831, 2121662, 4243324, 5304155, 10608310, 21216620]

約数ペア:

[(1, 21216620), (2, 10608310), (4, 5304155), (5, 4243324), (10, 2121662), (20, 1060831), (127, 167060), (254, 83530), (508, 41765), (635, 33412), (1270, 16706), (2540, 8353)]