21740690

素因数分解:

$2^1\times 5^1\times {\mathrm{971}}^1\times {\mathrm{2239}}^1$

素因数の和:3217

約数の個数: 16

約数和(自身を含む): 39191040

約数和(自身を除く): 17450350

約数列:

[1, 2, 5, 10, 971, 1942, 2239, 4478, 4855, 9710, 11195, 22390, 2174069, 4348138, 10870345, 21740690]

約数ペア:

[(1, 21740690), (2, 10870345), (5, 4348138), (10, 2174069), (971, 22390), (1942, 11195), (2239, 9710), (4478, 4855)]