21074180

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15727}}^1$

素因数の和:15803

約数の個数: 24

約数和(自身を含む): 44919168

約数和(自身を除く): 23844988

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15727, 31454, 62908, 78635, 157270, 314540, 1053709, 2107418, 4214836, 5268545, 10537090, 21074180]

約数ペア:

[(1, 21074180), (2, 10537090), (4, 5268545), (5, 4214836), (10, 2107418), (20, 1053709), (67, 314540), (134, 157270), (268, 78635), (335, 62908), (670, 31454), (1340, 15727)]