641387.0000000

素因数分解:

$2^2\times {\mathrm{401}}^1\times {\mathrm{2309}}^1$

素因数の和:2714

約数の個数: 12

約数和(自身を含む): 6500340

約数和(自身を除く): 2796704

約数列:

[1, 2, 4, 401, 802, 1604, 2309, 4618, 9236, 925909, 1851818, 3703636]

約数ペア:

[(1, 3703636), (2, 1851818), (4, 925909), (401, 9236), (802, 4618), (1604, 2309)]