81621136

素因数分解:

$2^4\times {\mathrm{179}}^1\times {\mathrm{28499}}^1$

素因数の和:28686

約数の個数: 20

約数和(自身を含む): 159030000

約数和(自身を除く): 77408864

約数列:

[1, 2, 4, 8, 16, 179, 358, 716, 1432, 2864, 28499, 56998, 113996, 227992, 455984, 5101321, 10202642, 20405284, 40810568, 81621136]

約数ペア:

[(1, 81621136), (2, 40810568), (4, 20405284), (8, 10202642), (16, 5101321), (179, 455984), (358, 227992), (716, 113996), (1432, 56998), (2864, 28499)]