21160204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{503}}^1\times {\mathrm{809}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 18847316

約数列:

[1, 2, 4, 13, 26, 52, 503, 809, 1006, 1618, 2012, 3236, 6539, 10517, 13078, 21034, 26156, 42068, 406927, 813854, 1627708, 5290051, 10580102, 21160204]

約数ペア:

[(1, 21160204), (2, 10580102), (4, 5290051), (13, 1627708), (26, 813854), (52, 406927), (503, 42068), (809, 26156), (1006, 21034), (1618, 13078), (2012, 10517), (3236, 6539)]