215821180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1\times {\mathrm{523}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 464808960

約数和(自身を除く): 248987780

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 439, 470, 523, 878, 940, 1046, 1756, 2092, 2195, 2615, 4390, 5230, 8780, 10460, 20633, 24581, 41266, 49162, 82532, 98324, 103165, 122905, 206330, 229597, 245810, 412660, 459194, 491620, 918388, 1147985, 2295970, 4591940, 10791059, 21582118, 43164236, 53955295, 107910590, 215821180]

約数ペア:

[(1, 215821180), (2, 107910590), (4, 53955295), (5, 43164236), (10, 21582118), (20, 10791059), (47, 4591940), (94, 2295970), (188, 1147985), (235, 918388), (439, 491620), (470, 459194), (523, 412660), (878, 245810), (940, 229597), (1046, 206330), (1756, 122905), (2092, 103165), (2195, 98324), (2615, 82532), (4390, 49162), (5230, 41266), (8780, 24581), (10460, 20633)]