81721936

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{57389}}^1$

素因数の和:57486

約数の個数: 20

約数和(自身を含む): 160118100

約数和(自身を除く): 78396164

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 57389, 114778, 229556, 459112, 918224, 5107621, 10215242, 20430484, 40860968, 81721936]

約数ペア:

[(1, 81721936), (2, 40860968), (4, 20430484), (8, 10215242), (16, 5107621), (89, 918224), (178, 459112), (356, 229556), (712, 114778), (1424, 57389)]