21490630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{307009}}^1$

素因数の和:307023

約数の個数: 16

約数和(自身を含む): 44209440

約数和(自身を除く): 22718810

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 307009, 614018, 1535045, 2149063, 3070090, 4298126, 10745315, 21490630]

約数ペア:

[(1, 21490630), (2, 10745315), (5, 4298126), (7, 3070090), (10, 2149063), (14, 1535045), (35, 614018), (70, 307009)]