21000481252

素因数分解:

$2^2\times {\mathrm{1321}}^1\times {\mathrm{3974353}}^1$

素因数の和:3975678

約数の個数: 12

約数和(自身を含む): 36778671916

約数和(自身を除く): 15778190664

約数列:

[1, 2, 4, 1321, 2642, 5284, 3974353, 7948706, 15897412, 5250120313, 10500240626, 21000481252]

約数ペア:

[(1, 21000481252), (2, 10500240626), (4, 5250120313), (1321, 15897412), (2642, 7948706), (5284, 3974353)]