55218640

素因数分解:

$2^4\times 5^1\times {\mathrm{690233}}^1$

素因数の和:690246

約数の個数: 20

約数和(自身を含む): 128383524

約数和(自身を除く): 73164884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 690233, 1380466, 2760932, 3451165, 5521864, 6902330, 11043728, 13804660, 27609320, 55218640]

約数ペア:

[(1, 55218640), (2, 27609320), (4, 13804660), (5, 11043728), (8, 6902330), (10, 5521864), (16, 3451165), (20, 2760932), (40, 1380466), (80, 690233)]