219829520

素因数分解:

$2^4\times 5^1\times {\mathrm{2747869}}^1$

素因数の和:2747882

約数の個数: 20

約数和(自身を含む): 511103820

約数和(自身を除く): 291274300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2747869, 5495738, 10991476, 13739345, 21982952, 27478690, 43965904, 54957380, 109914760, 219829520]

約数ペア:

[(1, 219829520), (2, 109914760), (4, 54957380), (5, 43965904), (8, 27478690), (10, 21982952), (16, 13739345), (20, 10991476), (40, 5495738), (80, 2747869)]