620039960

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{142211}}^1$

素因数の和:142331

約数の個数: 32

約数和(自身を含む): 1407898800

約数和(自身を除く): 787858840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 142211, 284422, 568844, 711055, 1137688, 1422110, 2844220, 5688440, 15500999, 31001998, 62003996, 77504995, 124007992, 155009990, 310019980, 620039960]

約数ペア:

[(1, 620039960), (2, 310019980), (4, 155009990), (5, 124007992), (8, 77504995), (10, 62003996), (20, 31001998), (40, 15500999), (109, 5688440), (218, 2844220), (436, 1422110), (545, 1137688), (872, 711055), (1090, 568844), (2180, 284422), (4360, 142211)]