21291940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22651}}^1$

素因数の和:22707

約数の個数: 24

約数和(自身を含む): 45666432

約数和(自身を除く): 24374492

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22651, 45302, 90604, 113255, 226510, 453020, 1064597, 2129194, 4258388, 5322985, 10645970, 21291940]

約数ペア:

[(1, 21291940), (2, 10645970), (4, 5322985), (5, 4258388), (10, 2129194), (20, 1064597), (47, 453020), (94, 226510), (188, 113255), (235, 90604), (470, 45302), (940, 22651)]