21508527

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1\times {\mathrm{419}}^1$

素因数の和:734

約数の個数: 16

約数和(自身を含む): 29272320

約数和(自身を除く): 7763793

約数列:

[1, 3, 71, 213, 241, 419, 723, 1257, 17111, 29749, 51333, 89247, 100979, 302937, 7169509, 21508527]

約数ペア:

[(1, 21508527), (3, 7169509), (71, 302937), (213, 100979), (241, 89247), (419, 51333), (723, 29749), (1257, 17111)]