278440761520

素因数分解:

$2^4\times 5^1\times {\mathrm{3480509519}}^1$

素因数の和:3480509532

約数の個数: 20

約数和(自身を含む): 647374770720

約数和(自身を除く): 368934009200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3480509519, 6961019038, 13922038076, 17402547595, 27844076152, 34805095190, 55688152304, 69610190380, 139220380760, 278440761520]

約数ペア:

[(1, 278440761520), (2, 139220380760), (4, 69610190380), (5, 55688152304), (8, 34805095190), (10, 27844076152), (16, 17402547595), (20, 13922038076), (40, 6961019038), (80, 3480509519)]