83641780

素因数分解:

$2^2\times 5^1\times {\mathrm{4182089}}^1$

素因数の和:4182098

約数の個数: 12

約数和(自身を含む): 175647780

約数和(自身を除く): 92006000

約数列:

[1, 2, 4, 5, 10, 20, 4182089, 8364178, 16728356, 20910445, 41820890, 83641780]

約数ペア:

[(1, 83641780), (2, 41820890), (4, 20910445), (5, 16728356), (10, 8364178), (20, 4182089)]