40804816340

素因数分解:

$2^2\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{1998277}}^1$

素因数の和:1999307

約数の個数: 24

約数和(自身を含む): 85774084872

約数和(自身を除く): 44969268532

約数列:

[1, 2, 4, 5, 10, 20, 1021, 2042, 4084, 5105, 10210, 20420, 1998277, 3996554, 7993108, 9991385, 19982770, 39965540, 2040240817, 4080481634, 8160963268, 10201204085, 20402408170, 40804816340]

約数ペア:

[(1, 40804816340), (2, 20402408170), (4, 10201204085), (5, 8160963268), (10, 4080481634), (20, 2040240817), (1021, 39965540), (2042, 19982770), (4084, 9991385), (5105, 7993108), (10210, 3996554), (20420, 1998277)]