30721390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{438877}}^1$

素因数の和:438891

約数の個数: 16

約数和(自身を含む): 63198432

約数和(自身を除く): 32477042

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 438877, 877754, 2194385, 3072139, 4388770, 6144278, 15360695, 30721390]

約数ペア:

[(1, 30721390), (2, 15360695), (5, 6144278), (7, 4388770), (10, 3072139), (14, 2194385), (35, 877754), (70, 438877)]