20252860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 24905540

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 223, 239, 380, 446, 478, 892, 956, 1115, 1195, 2230, 2390, 4237, 4460, 4541, 4780, 8474, 9082, 16948, 18164, 21185, 22705, 42370, 45410, 53297, 84740, 90820, 106594, 213188, 266485, 532970, 1012643, 1065940, 2025286, 4050572, 5063215, 10126430, 20252860]

約数ペア:

[(1, 20252860), (2, 10126430), (4, 5063215), (5, 4050572), (10, 2025286), (19, 1065940), (20, 1012643), (38, 532970), (76, 266485), (95, 213188), (190, 106594), (223, 90820), (239, 84740), (380, 53297), (446, 45410), (478, 42370), (892, 22705), (956, 21185), (1115, 18164), (1195, 16948), (2230, 9082), (2390, 8474), (4237, 4780), (4460, 4541)]