1240420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{569}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 2633400

約数和(自身を除く): 1392980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 569, 1090, 1138, 2180, 2276, 2845, 5690, 11380, 62021, 124042, 248084, 310105, 620210, 1240420]

約数ペア:

[(1, 1240420), (2, 620210), (4, 310105), (5, 248084), (10, 124042), (20, 62021), (109, 11380), (218, 5690), (436, 2845), (545, 2276), (569, 2180), (1090, 1138)]