20511418

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{1709}}^1$

素因数の和:2081

約数の個数: 16

約数和(自身を含む): 32688360

約数和(自身を除く): 12176942

約数列:

[1, 2, 17, 34, 353, 706, 1709, 3418, 6001, 12002, 29053, 58106, 603277, 1206554, 10255709, 20511418]

約数ペア:

[(1, 20511418), (2, 10255709), (17, 1206554), (34, 603277), (353, 58106), (706, 29053), (1709, 12002), (3418, 6001)]