20531245

素因数分解:

$5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1783}}^1$

素因数の和:1849

約数の個数: 24

約数和(自身を含む): 29286144

約数和(自身を除く): 8754899

約数列:

[1, 5, 7, 35, 47, 49, 235, 245, 329, 1645, 1783, 2303, 8915, 11515, 12481, 62405, 83801, 87367, 419005, 436835, 586607, 2933035, 4106249, 20531245]

約数ペア:

[(1, 20531245), (5, 4106249), (7, 2933035), (35, 586607), (47, 436835), (49, 419005), (235, 87367), (245, 83801), (329, 62405), (1645, 12481), (1783, 11515), (2303, 8915)]