290421520

素因数分解:

$2^4\times 5^1\times {\mathrm{3630269}}^1$

素因数の和:3630282

約数の個数: 20

約数和(自身を含む): 675230220

約数和(自身を除く): 384808700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3630269, 7260538, 14521076, 18151345, 29042152, 36302690, 58084304, 72605380, 145210760, 290421520]

約数ペア:

[(1, 290421520), (2, 145210760), (4, 72605380), (5, 58084304), (8, 36302690), (10, 29042152), (16, 18151345), (20, 14521076), (40, 7260538), (80, 3630269)]