840042020

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{392543}}^1$

素因数の和:392659

約数の個数: 24

約数和(自身を含む): 1780579584

約数和(自身を除く): 940537564

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 392543, 785086, 1570172, 1962715, 3925430, 7850860, 42002101, 84004202, 168008404, 210010505, 420021010, 840042020]

約数ペア:

[(1, 840042020), (2, 420021010), (4, 210010505), (5, 168008404), (10, 84004202), (20, 42002101), (107, 7850860), (214, 3925430), (428, 1962715), (535, 1570172), (1070, 785086), (2140, 392543)]