20647390

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{30817}}^1$

素因数の和:30891

約数の個数: 16

約数和(自身を含む): 37721232

約数和(自身を除く): 17073842

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 30817, 61634, 154085, 308170, 2064739, 4129478, 10323695, 20647390]

約数ペア:

[(1, 20647390), (2, 10323695), (5, 4129478), (10, 2064739), (67, 308170), (134, 154085), (335, 61634), (670, 30817)]