20289878

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:396

約数の個数: 32

約数和(自身を含む): 35825664

約数和(自身を除く): 15535786

約数列:

[1, 2, 7, 14, 67, 97, 134, 194, 223, 446, 469, 679, 938, 1358, 1561, 3122, 6499, 12998, 14941, 21631, 29882, 43262, 45493, 90986, 104587, 151417, 209174, 302834, 1449277, 2898554, 10144939, 20289878]

約数ペア:

[(1, 20289878), (2, 10144939), (7, 2898554), (14, 1449277), (67, 302834), (97, 209174), (134, 151417), (194, 104587), (223, 90986), (446, 45493), (469, 43262), (679, 29882), (938, 21631), (1358, 14941), (1561, 12998), (3122, 6499)]