398020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2843}}^1$

素因数の和:2859

約数の個数: 24

約数和(自身を含む): 955584

約数和(自身を除く): 557564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2843, 5686, 11372, 14215, 19901, 28430, 39802, 56860, 79604, 99505, 199010, 398020]

約数ペア:

[(1, 398020), (2, 199010), (4, 99505), (5, 79604), (7, 56860), (10, 39802), (14, 28430), (20, 19901), (28, 14215), (35, 11372), (70, 5686), (140, 2843)]