64189885

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1\times {\mathrm{823}}^1$

素因数の和:1668

約数の個数: 16

約数和(自身を含む): 81279360

約数和(自身を除く): 17089475

約数列:

[1, 5, 19, 95, 821, 823, 4105, 4115, 15599, 15637, 77995, 78185, 675683, 3378415, 12837977, 64189885]

約数ペア:

[(1, 64189885), (5, 12837977), (19, 3378415), (95, 675683), (821, 78185), (823, 77995), (4105, 15637), (4115, 15599)]