128942860

素因数分解:

$2^2\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{5741}}^1$

素因数の和:6873

約数の個数: 24

約数和(自身を含む): 271068336

約数和(自身を除く): 142125476

約数列:

[1, 2, 4, 5, 10, 20, 1123, 2246, 4492, 5615, 5741, 11230, 11482, 22460, 22964, 28705, 57410, 114820, 6447143, 12894286, 25788572, 32235715, 64471430, 128942860]

約数ペア:

[(1, 128942860), (2, 64471430), (4, 32235715), (5, 25788572), (10, 12894286), (20, 6447143), (1123, 114820), (2246, 57410), (4492, 28705), (5615, 22964), (5741, 22460), (11230, 11482)]