21006786

素因数分解:

$2^1\times 3^1\times {\mathrm{401}}^1\times {\mathrm{8731}}^1$

素因数の和:9137

約数の個数: 16

約数和(自身を含む): 42123168

約数和(自身を除く): 21116382

約数列:

[1, 2, 3, 6, 401, 802, 1203, 2406, 8731, 17462, 26193, 52386, 3501131, 7002262, 10503393, 21006786]

約数ペア:

[(1, 21006786), (2, 10503393), (3, 7002262), (6, 3501131), (401, 52386), (802, 26193), (1203, 17462), (2406, 8731)]