78164420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{47087}}^1$

素因数の和:47179

約数の個数: 24

約数和(自身を含む): 166126464

約数和(自身を除く): 87962044

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 47087, 94174, 188348, 235435, 470870, 941740, 3908221, 7816442, 15632884, 19541105, 39082210, 78164420]

約数ペア:

[(1, 78164420), (2, 39082210), (4, 19541105), (5, 15632884), (10, 7816442), (20, 3908221), (83, 941740), (166, 470870), (332, 235435), (415, 188348), (830, 94174), (1660, 47087)]