21126638

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{11131}}^1$

素因数の和:11219

約数の個数: 16

約数和(自身を含む): 34598256

約数和(自身を除く): 13471618

約数列:

[1, 2, 13, 26, 73, 146, 949, 1898, 11131, 22262, 144703, 289406, 812563, 1625126, 10563319, 21126638]

約数ペア:

[(1, 21126638), (2, 10563319), (13, 1625126), (26, 812563), (73, 289406), (146, 144703), (949, 22262), (1898, 11131)]