1990573475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{380971}}^1$

素因数の和:381011

約数の個数: 24

約数和(自身を含む): 2834431680

約数和(自身を除く): 843858205

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 5225, 380971, 1904855, 4190681, 7238449, 9524275, 20953405, 36192245, 79622939, 104767025, 180961225, 398114695, 1990573475]

約数ペア:

[(1, 1990573475), (5, 398114695), (11, 180961225), (19, 104767025), (25, 79622939), (55, 36192245), (95, 20953405), (209, 9524275), (275, 7238449), (475, 4190681), (1045, 1904855), (5225, 380971)]