20204210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2129}}^1$

素因数の和:2222

約数の個数: 32

約数和(自身を含む): 39720240

約数和(自身を除く): 19516030

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 2129, 4258, 4745, 9490, 10645, 21290, 27677, 55354, 138385, 155417, 276770, 310834, 777085, 1554170, 2020421, 4040842, 10102105, 20204210]

約数ペア:

[(1, 20204210), (2, 10102105), (5, 4040842), (10, 2020421), (13, 1554170), (26, 777085), (65, 310834), (73, 276770), (130, 155417), (146, 138385), (365, 55354), (730, 27677), (949, 21290), (1898, 10645), (2129, 9490), (4258, 4745)]