20051721

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1579}}^1$

素因数の和:1685

約数の個数: 24

約数和(自身を含む): 31056480

約数和(自身を除く): 11004759

約数列:

[1, 3, 9, 17, 51, 83, 153, 249, 747, 1411, 1579, 4233, 4737, 12699, 14211, 26843, 80529, 131057, 241587, 393171, 1179513, 2227969, 6683907, 20051721]

約数ペア:

[(1, 20051721), (3, 6683907), (9, 2227969), (17, 1179513), (51, 393171), (83, 241587), (153, 131057), (249, 80529), (747, 26843), (1411, 14211), (1579, 12699), (4233, 4737)]