80419340

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{20411}}^1$

素因数の和:20617

約数の個数: 24

約数和(自身を含む): 169746192

約数和(自身を除く): 89326852

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 20411, 40822, 81644, 102055, 204110, 408220, 4020967, 8041934, 16083868, 20104835, 40209670, 80419340]

約数ペア:

[(1, 80419340), (2, 40209670), (4, 20104835), (5, 16083868), (10, 8041934), (20, 4020967), (197, 408220), (394, 204110), (788, 102055), (985, 81644), (1970, 40822), (3940, 20411)]