208045520

素因数分解:

$2^4\times 5^1\times {\mathrm{2600569}}^1$

素因数の和:2600582

約数の個数: 20

約数和(自身を含む): 483706020

約数和(自身を除く): 275660500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2600569, 5201138, 10402276, 13002845, 20804552, 26005690, 41609104, 52011380, 104022760, 208045520]

約数ペア:

[(1, 208045520), (2, 104022760), (4, 52011380), (5, 41609104), (8, 26005690), (10, 20804552), (16, 13002845), (20, 10402276), (40, 5201138), (80, 2600569)]