18712121

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:544

約数の個数: 16

約数和(自身を含む): 20684160

約数和(自身を除く): 1972039

約数列:

[1, 17, 37, 71, 419, 629, 1207, 2627, 7123, 15503, 29749, 44659, 263551, 505733, 1100713, 18712121]

約数ペア:

[(1, 18712121), (17, 1100713), (37, 505733), (71, 263551), (419, 44659), (629, 29749), (1207, 15503), (2627, 7123)]