18880491

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{4261}}^1$

素因数の和:4482

約数の個数: 16

約数和(自身を含む): 28913408

約数和(自身を除く): 10032917

約数列:

[1, 3, 7, 21, 211, 633, 1477, 4261, 4431, 12783, 29827, 89481, 899071, 2697213, 6293497, 18880491]

約数ペア:

[(1, 18880491), (3, 6293497), (7, 2697213), (21, 899071), (211, 89481), (633, 29827), (1477, 12783), (4261, 4431)]