19640048

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20123}}^1$

素因数の和:20192

約数の個数: 20

約数和(自身を含む): 38678328

約数和(自身を除く): 19038280

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20123, 40246, 80492, 160984, 321968, 1227503, 2455006, 4910012, 9820024, 19640048]

約数ペア:

[(1, 19640048), (2, 9820024), (4, 4910012), (8, 2455006), (16, 1227503), (61, 321968), (122, 160984), (244, 80492), (488, 40246), (976, 20123)]