319291220

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{40213}}^1$

素因数の和:40619

約数の個数: 24

約数和(自身を含む): 672217224

約数和(自身を除く): 352926004

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 40213, 80426, 160852, 201065, 402130, 804260, 15964561, 31929122, 63858244, 79822805, 159645610, 319291220]

約数ペア:

[(1, 319291220), (2, 159645610), (4, 79822805), (5, 63858244), (10, 31929122), (20, 15964561), (397, 804260), (794, 402130), (1588, 201065), (1985, 160852), (3970, 80426), (7940, 40213)]