13130420

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2111}}^1$

素因数の和:2431

約数の個数: 24

約数和(自身を含む): 27675648

約数和(自身を除く): 14545228

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 2111, 3110, 4222, 6220, 8444, 10555, 21110, 42220, 656521, 1313042, 2626084, 3282605, 6565210, 13130420]

約数ペア:

[(1, 13130420), (2, 6565210), (4, 3282605), (5, 2626084), (10, 1313042), (20, 656521), (311, 42220), (622, 21110), (1244, 10555), (1555, 8444), (2111, 6220), (3110, 4222)]