19754740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12503}}^1$

素因数の和:12591

約数の個数: 24

約数和(自身を含む): 42013440

約数和(自身を除く): 22258700

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12503, 25006, 50012, 62515, 125030, 250060, 987737, 1975474, 3950948, 4938685, 9877370, 19754740]

約数ペア:

[(1, 19754740), (2, 9877370), (4, 4938685), (5, 3950948), (10, 1975474), (20, 987737), (79, 250060), (158, 125030), (316, 62515), (395, 50012), (790, 25006), (1580, 12503)]