80986420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{48787}}^1$

素因数の和:48879

約数の個数: 24

約数和(自身を含む): 172124064

約数和(自身を除く): 91137644

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 48787, 97574, 195148, 243935, 487870, 975740, 4049321, 8098642, 16197284, 20246605, 40493210, 80986420]

約数ペア:

[(1, 80986420), (2, 40493210), (4, 20246605), (5, 16197284), (10, 8098642), (20, 4049321), (83, 975740), (166, 487870), (332, 243935), (415, 195148), (830, 97574), (1660, 48787)]