81218740

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{60611}}^1$

素因数の和:60687

約数の個数: 24

約数和(自身を含む): 173107872

約数和(自身を除く): 91889132

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 60611, 121222, 242444, 303055, 606110, 1212220, 4060937, 8121874, 16243748, 20304685, 40609370, 81218740]

約数ペア:

[(1, 81218740), (2, 40609370), (4, 20304685), (5, 16243748), (10, 8121874), (20, 4060937), (67, 1212220), (134, 606110), (268, 303055), (335, 242444), (670, 121222), (1340, 60611)]