18239728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{87691}}^1$

素因数の和:87712

約数の個数: 20

約数和(自身を含む): 38058328

約数和(自身を除く): 19818600

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 87691, 175382, 350764, 701528, 1139983, 1403056, 2279966, 4559932, 9119864, 18239728]

約数ペア:

[(1, 18239728), (2, 9119864), (4, 4559932), (8, 2279966), (13, 1403056), (16, 1139983), (26, 701528), (52, 350764), (104, 175382), (208, 87691)]