156905680

素因数分解:

$2^4\times 5^1\times {\mathrm{1961321}}^1$

素因数の和:1961334

約数の個数: 20

約数和(自身を含む): 364805892

約数和(自身を除く): 207900212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1961321, 3922642, 7845284, 9806605, 15690568, 19613210, 31381136, 39226420, 78452840, 156905680]

約数ペア:

[(1, 156905680), (2, 78452840), (4, 39226420), (5, 31381136), (8, 19613210), (10, 15690568), (16, 9806605), (20, 7845284), (40, 3922642), (80, 1961321)]