21038577

素因数分解:

$3^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{4157}}^1$

素因数の和:4408

約数の個数: 16

約数和(自身を含む): 32199552

約数和(自身を除く): 11160975

約数列:

[1, 3, 7, 21, 241, 723, 1687, 4157, 5061, 12471, 29099, 87297, 1001837, 3005511, 7012859, 21038577]

約数ペア:

[(1, 21038577), (3, 7012859), (7, 3005511), (21, 1001837), (241, 87297), (723, 29099), (1687, 12471), (4157, 5061)]