21752978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^2\times {\mathrm{157}}^1$

素因数の和:318

約数の個数: 24

約数和(自身を含む): 35854308

約数和(自身を除く): 14101330

約数列:

[1, 2, 13, 26, 73, 146, 157, 314, 949, 1898, 2041, 4082, 5329, 10658, 11461, 22922, 69277, 138554, 148993, 297986, 836653, 1673306, 10876489, 21752978]

約数ペア:

[(1, 21752978), (2, 10876489), (13, 1673306), (26, 836653), (73, 297986), (146, 148993), (157, 138554), (314, 69277), (949, 22922), (1898, 11461), (2041, 10658), (4082, 5329)]