210421211

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6781}}^1$

素因数の和:6843

約数の個数: 32

約数和(自身を含む): 291680256

約数和(自身を除く): 81259045

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 1001, 2387, 2821, 4433, 6781, 31031, 47467, 74591, 88153, 210211, 522137, 617071, 969683, 1471477, 2312321, 2732743, 6787781, 16186247, 19129201, 30060173, 210421211]

約数ペア:

[(1, 210421211), (7, 30060173), (11, 19129201), (13, 16186247), (31, 6787781), (77, 2732743), (91, 2312321), (143, 1471477), (217, 969683), (341, 617071), (403, 522137), (1001, 210211), (2387, 88153), (2821, 74591), (4433, 47467), (6781, 31031)]