251707897

素因数分解:

$7^1\times {\mathrm{41}}^2\times {\mathrm{21391}}^1$

素因数の和:21480

約数の個数: 12

約数和(自身を含む): 294867328

約数和(自身を除く): 43159431

約数列:

[1, 7, 41, 287, 1681, 11767, 21391, 149737, 877031, 6139217, 35958271, 251707897]

約数ペア:

[(1, 251707897), (7, 35958271), (41, 6139217), (287, 877031), (1681, 149737), (11767, 21391)]