1681520

素因数分解:

$2^4\times 5^1\times {\mathrm{21019}}^1$

素因数の和:21032

約数の個数: 20

約数和(自身を含む): 3909720

約数和(自身を除く): 2228200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21019, 42038, 84076, 105095, 168152, 210190, 336304, 420380, 840760, 1681520]

約数ペア:

[(1, 1681520), (2, 840760), (4, 420380), (5, 336304), (8, 210190), (10, 168152), (16, 105095), (20, 84076), (40, 42038), (80, 21019)]