64403390

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{90709}}^1$

素因数の和:90787

約数の個数: 16

約数和(自身を含む): 117560160

約数和(自身を除く): 53156770

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 90709, 181418, 453545, 907090, 6440339, 12880678, 32201695, 64403390]

約数ペア:

[(1, 64403390), (2, 32201695), (5, 12880678), (10, 6440339), (71, 907090), (142, 453545), (355, 181418), (710, 90709)]