81400790

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{114649}}^1$

素因数の和:114727

約数の個数: 16

約数和(自身を含む): 148586400

約数和(自身を除く): 67185610

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 114649, 229298, 573245, 1146490, 8140079, 16280158, 40700395, 81400790]

約数ペア:

[(1, 81400790), (2, 40700395), (5, 16280158), (10, 8140079), (71, 1146490), (142, 573245), (355, 229298), (710, 114649)]