19971805

素因数分解:

$5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{1423}}^1$

素因数の和:1836

約数の個数: 16

約数和(自身を含む): 27477504

約数和(自身を除く): 7505699

約数列:

[1, 5, 7, 35, 401, 1423, 2005, 2807, 7115, 9961, 14035, 49805, 570623, 2853115, 3994361, 19971805]

約数ペア:

[(1, 19971805), (5, 3994361), (7, 2853115), (35, 570623), (401, 49805), (1423, 14035), (2005, 9961), (2807, 7115)]