20867444

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30869}}^1$

素因数の和:30899

約数の個数: 18

約数和(自身を含む): 39544470

約数和(自身を除く): 18677026

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30869, 61738, 123476, 401297, 802594, 1605188, 5216861, 10433722, 20867444]

約数ペア:

[(1, 20867444), (2, 10433722), (4, 5216861), (13, 1605188), (26, 802594), (52, 401297), (169, 123476), (338, 61738), (676, 30869)]