19918941

素因数分解:

$3^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{757}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 31108320

約数和(自身を除く): 11189379

約数列:

[1, 3, 7, 21, 49, 147, 179, 537, 757, 1253, 2271, 3759, 5299, 8771, 15897, 26313, 37093, 111279, 135503, 406509, 948521, 2845563, 6639647, 19918941]

約数ペア:

[(1, 19918941), (3, 6639647), (7, 2845563), (21, 948521), (49, 406509), (147, 135503), (179, 111279), (537, 37093), (757, 26313), (1253, 15897), (2271, 8771), (3759, 5299)]