3937820

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{491}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 8306928

約数和(自身を除く): 4369108

約数列:

[1, 2, 4, 5, 10, 20, 401, 491, 802, 982, 1604, 1964, 2005, 2455, 4010, 4910, 8020, 9820, 196891, 393782, 787564, 984455, 1968910, 3937820]

約数ペア:

[(1, 3937820), (2, 1968910), (4, 984455), (5, 787564), (10, 393782), (20, 196891), (401, 9820), (491, 8020), (802, 4910), (982, 4010), (1604, 2455), (1964, 2005)]