20803209

素因数分解:

$3^1\times 7^1\times {\mathrm{569}}^1\times {\mathrm{1741}}^1$

素因数の和:2320

約数の個数: 16

約数和(自身を含む): 31774080

約数和(自身を除く): 10970871

約数列:

[1, 3, 7, 21, 569, 1707, 1741, 3983, 5223, 11949, 12187, 36561, 990629, 2971887, 6934403, 20803209]

約数ペア:

[(1, 20803209), (3, 6934403), (7, 2971887), (21, 990629), (569, 36561), (1707, 12187), (1741, 11949), (3983, 5223)]