21897535

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 30108672

約数和(自身を除く): 8211137

約数列:

[1, 5, 11, 43, 47, 55, 197, 215, 235, 473, 517, 985, 2021, 2167, 2365, 2585, 8471, 9259, 10105, 10835, 22231, 42355, 46295, 93181, 101849, 111155, 398137, 465905, 509245, 1990685, 4379507, 21897535]

約数ペア:

[(1, 21897535), (5, 4379507), (11, 1990685), (43, 509245), (47, 465905), (55, 398137), (197, 111155), (215, 101849), (235, 93181), (473, 46295), (517, 42355), (985, 22231), (2021, 10835), (2167, 10105), (2365, 9259), (2585, 8471)]