128555216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{422879}}^1$

素因数の和:422906

約数の個数: 20

約数和(自身を含む): 262185600

約数和(自身を除く): 133630384

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 422879, 845758, 1691516, 3383032, 6766064, 8034701, 16069402, 32138804, 64277608, 128555216]

約数ペア:

[(1, 128555216), (2, 64277608), (4, 32138804), (8, 16069402), (16, 8034701), (19, 6766064), (38, 3383032), (76, 1691516), (152, 845758), (304, 422879)]