19721142490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{281730607}}^1$

素因数の和:281730621

約数の個数: 16

約数和(自身を含む): 40569207552

約数和(自身を除く): 20848065062

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 281730607, 563461214, 1408653035, 1972114249, 2817306070, 3944228498, 9860571245, 19721142490]

約数ペア:

[(1, 19721142490), (2, 9860571245), (5, 3944228498), (7, 2817306070), (10, 1972114249), (14, 1408653035), (35, 563461214), (70, 281730607)]