21563225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{449}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 28625400

約数和(自身を除く): 7062175

約数列:

[1, 5, 17, 25, 85, 113, 425, 449, 565, 1921, 2245, 2825, 7633, 9605, 11225, 38165, 48025, 50737, 190825, 253685, 862529, 1268425, 4312645, 21563225]

約数ペア:

[(1, 21563225), (5, 4312645), (17, 1268425), (25, 862529), (85, 253685), (113, 190825), (425, 50737), (449, 48025), (565, 38165), (1921, 11225), (2245, 9605), (2825, 7633)]