19901989870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{284314141}}^1$

素因数の和:284314155

約数の個数: 16

約数和(自身を含む): 40941236448

約数和(自身を除く): 21039246578

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 284314141, 568628282, 1421570705, 1990198987, 2843141410, 3980397974, 9950994935, 19901989870]

約数ペア:

[(1, 19901989870), (2, 9950994935), (5, 3980397974), (7, 2843141410), (10, 1990198987), (14, 1421570705), (35, 568628282), (70, 284314141)]