1641140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2647}}^1$

素因数の和:2687

約数の個数: 24

約数和(自身を含む): 3558912

約数和(自身を除く): 1917772

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 2647, 5294, 10588, 13235, 26470, 52940, 82057, 164114, 328228, 410285, 820570, 1641140]

約数ペア:

[(1, 1641140), (2, 820570), (4, 410285), (5, 328228), (10, 164114), (20, 82057), (31, 52940), (62, 26470), (124, 13235), (155, 10588), (310, 5294), (620, 2647)]