20655128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10453}}^1$

素因数の和:10491

約数の個数: 32

約数和(自身を含む): 43906800

約数和(自身を除く): 23251672

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10453, 20906, 41812, 83624, 135889, 198607, 271778, 397214, 543556, 794428, 1087112, 1588856, 2581891, 5163782, 10327564, 20655128]

約数ペア:

[(1, 20655128), (2, 10327564), (4, 5163782), (8, 2581891), (13, 1588856), (19, 1087112), (26, 794428), (38, 543556), (52, 397214), (76, 271778), (104, 198607), (152, 135889), (247, 83624), (494, 41812), (988, 20906), (1976, 10453)]