18669872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89759}}^1$

素因数の和:89780

約数の個数: 20

約数和(自身を含む): 38955840

約数和(自身を除く): 20285968

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89759, 179518, 359036, 718072, 1166867, 1436144, 2333734, 4667468, 9334936, 18669872]

約数ペア:

[(1, 18669872), (2, 9334936), (4, 4667468), (8, 2333734), (13, 1436144), (16, 1166867), (26, 718072), (52, 359036), (104, 179518), (208, 89759)]