21367759

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 27841536

約数和(自身を除く): 6473777

約数列:

[1, 7, 17, 23, 37, 119, 161, 211, 259, 391, 629, 851, 1477, 2737, 3587, 4403, 4853, 5957, 7807, 14467, 25109, 33971, 54649, 82501, 101269, 132719, 179561, 577507, 929033, 1256927, 3052537, 21367759]

約数ペア:

[(1, 21367759), (7, 3052537), (17, 1256927), (23, 929033), (37, 577507), (119, 179561), (161, 132719), (211, 101269), (259, 82501), (391, 54649), (629, 33971), (851, 25109), (1477, 14467), (2737, 7807), (3587, 5957), (4403, 4853)]