21250116095

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{709}}^1\times {\mathrm{1979}}^1$

素因数の和:2939

約数の個数: 32

約数和(自身を含む): 27632404800

約数和(自身を除く): 6382288705

約数列:

[1, 5, 13, 65, 233, 709, 1165, 1979, 3029, 3545, 9217, 9895, 15145, 25727, 46085, 128635, 165197, 461107, 825985, 1403111, 2147561, 2305535, 5994391, 7015555, 10737805, 18240443, 29971955, 91202215, 326924863, 1634624315, 4250023219, 21250116095]

約数ペア:

[(1, 21250116095), (5, 4250023219), (13, 1634624315), (65, 326924863), (233, 91202215), (709, 29971955), (1165, 18240443), (1979, 10737805), (3029, 7015555), (3545, 5994391), (9217, 2305535), (9895, 2147561), (15145, 1403111), (25727, 825985), (46085, 461107), (128635, 165197)]