20138461

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 25025280

約数和(自身を除く): 4886819

約数列:

[1, 7, 19, 49, 97, 133, 223, 679, 931, 1561, 1843, 4237, 4753, 10927, 12901, 21631, 29659, 90307, 151417, 207613, 410989, 1059919, 2876923, 20138461]

約数ペア:

[(1, 20138461), (7, 2876923), (19, 1059919), (49, 410989), (97, 207613), (133, 151417), (223, 90307), (679, 29659), (931, 21631), (1561, 12901), (1843, 10927), (4237, 4753)]