1641968

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{2503}}^1$

素因数の和:2552

約数の個数: 20

約数和(自身を含む): 3260208

約数和(自身を除く): 1618240

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 2503, 5006, 10012, 20024, 40048, 102623, 205246, 410492, 820984, 1641968]

約数ペア:

[(1, 1641968), (2, 820984), (4, 410492), (8, 205246), (16, 102623), (41, 40048), (82, 20024), (164, 10012), (328, 5006), (656, 2503)]