21000700049

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{176476471}}^1$

素因数の和:176476495

約数の個数: 8

約数和(自身を含む): 25412611968

約数和(自身を除く): 4411911919

約数列:

[1, 7, 17, 119, 176476471, 1235335297, 3000100007, 21000700049]

約数ペア:

[(1, 21000700049), (7, 3000100007), (17, 1235335297), (119, 176476471)]