638078290

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1483903}}^1$

素因数の和:1483953

約数の個数: 16

約数和(自身を含む): 1175251968

約数和(自身を除く): 537173678

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 1483903, 2967806, 7419515, 14839030, 63807829, 127615658, 319039145, 638078290]

約数ペア:

[(1, 638078290), (2, 319039145), (5, 127615658), (10, 63807829), (43, 14839030), (86, 7419515), (215, 2967806), (430, 1483903)]