20123390889

素因数分解:

$3^2\times 7^1\times {\mathrm{787}}^1\times {\mathrm{405869}}^1$

素因数の和:406669

約数の個数: 24

約数和(自身を含む): 33261858240

約数和(自身を除く): 13138467351

約数列:

[1, 3, 7, 9, 21, 63, 787, 2361, 5509, 7083, 16527, 49581, 405869, 1217607, 2841083, 3652821, 8523249, 25569747, 319418903, 958256709, 2235932321, 2874770127, 6707796963, 20123390889]

約数ペア:

[(1, 20123390889), (3, 6707796963), (7, 2874770127), (9, 2235932321), (21, 958256709), (63, 319418903), (787, 25569747), (2361, 8523249), (5509, 3652821), (7083, 2841083), (16527, 1217607), (49581, 405869)]