1679420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 3559248

約数和(自身を除く): 1879828

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 641, 655, 1282, 1310, 2564, 2620, 3205, 6410, 12820, 83971, 167942, 335884, 419855, 839710, 1679420]

約数ペア:

[(1, 1679420), (2, 839710), (4, 419855), (5, 335884), (10, 167942), (20, 83971), (131, 12820), (262, 6410), (524, 3205), (641, 2620), (655, 2564), (1282, 1310)]