87204020

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{22133}}^1$

素因数の和:22339

約数の個数: 24

約数和(自身を含む): 184066344

約数和(自身を除く): 96862324

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 22133, 44266, 88532, 110665, 221330, 442660, 4360201, 8720402, 17440804, 21801005, 43602010, 87204020]

約数ペア:

[(1, 87204020), (2, 43602010), (4, 21801005), (5, 17440804), (10, 8720402), (20, 4360201), (197, 442660), (394, 221330), (788, 110665), (985, 88532), (1970, 44266), (3940, 22133)]