81321518

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1\times {\mathrm{4073}}^1$

素因数の和:4291

約数の個数: 16

約数和(自身を含む): 124664400

約数和(自身を除く): 43342882

約数列:

[1, 2, 67, 134, 149, 298, 4073, 8146, 9983, 19966, 272891, 545782, 606877, 1213754, 40660759, 81321518]

約数ペア:

[(1, 81321518), (2, 40660759), (67, 1213754), (134, 606877), (149, 545782), (298, 272891), (4073, 19966), (8146, 9983)]