21410305

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2819}}^1$

素因数の和:2869

約数の個数: 24

約数和(自身を含む): 30862080

約数和(自身を除く): 9451775

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2819, 7595, 14095, 19733, 87389, 98665, 138131, 436945, 611723, 690655, 3058615, 4282061, 21410305]

約数ペア:

[(1, 21410305), (5, 4282061), (7, 3058615), (31, 690655), (35, 611723), (49, 436945), (155, 138131), (217, 98665), (245, 87389), (1085, 19733), (1519, 14095), (2819, 7595)]