21427917

素因数分解:

$3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{1787}}^1$

素因数の和:2368

約数の個数: 16

約数和(自身を含む): 32727552

約数和(自身を除く): 11299635

約数列:

[1, 3, 7, 21, 571, 1713, 1787, 3997, 5361, 11991, 12509, 37527, 1020377, 3061131, 7142639, 21427917]

約数ペア:

[(1, 21427917), (3, 7142639), (7, 3061131), (21, 1020377), (571, 37527), (1713, 12509), (1787, 11991), (3997, 5361)]