19895540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142111}}^1$

素因数の和:142127

約数の個数: 24

約数和(自身を含む): 47749632

約数和(自身を除く): 27854092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142111, 284222, 568444, 710555, 994777, 1421110, 1989554, 2842220, 3979108, 4973885, 9947770, 19895540]

約数ペア:

[(1, 19895540), (2, 9947770), (4, 4973885), (5, 3979108), (7, 2842220), (10, 1989554), (14, 1421110), (20, 994777), (28, 710555), (35, 568444), (70, 284222), (140, 142111)]