64873780

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{8089}}^1$

素因数の和:8499

約数の個数: 24

約数和(自身を含む): 136591560

約数和(自身を除く): 71717780

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 8089, 16178, 32356, 40445, 80890, 161780, 3243689, 6487378, 12974756, 16218445, 32436890, 64873780]

約数ペア:

[(1, 64873780), (2, 32436890), (4, 16218445), (5, 12974756), (10, 6487378), (20, 3243689), (401, 161780), (802, 80890), (1604, 40445), (2005, 32356), (4010, 16178), (8020, 8089)]