490706980

素因数分解:

$2^2\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{18917}}^1$

素因数の和:20223

約数の個数: 24

約数和(自身を含む): 1031333688

約数和(自身を除く): 540626708

約数列:

[1, 2, 4, 5, 10, 20, 1297, 2594, 5188, 6485, 12970, 18917, 25940, 37834, 75668, 94585, 189170, 378340, 24535349, 49070698, 98141396, 122676745, 245353490, 490706980]

約数ペア:

[(1, 490706980), (2, 245353490), (4, 122676745), (5, 98141396), (10, 49070698), (20, 24535349), (1297, 378340), (2594, 189170), (5188, 94585), (6485, 75668), (12970, 37834), (18917, 25940)]