21041325

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5501}}^1$

素因数の和:5534

約数の個数: 36

約数和(自身を含む): 39911508

約数和(自身を除く): 18870183

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5501, 16503, 27505, 49509, 82515, 93517, 137525, 247545, 280551, 412575, 467585, 841653, 1237725, 1402755, 2337925, 4208265, 7013775, 21041325]

約数ペア:

[(1, 21041325), (3, 7013775), (5, 4208265), (9, 2337925), (15, 1402755), (17, 1237725), (25, 841653), (45, 467585), (51, 412575), (75, 280551), (85, 247545), (153, 137525), (225, 93517), (255, 82515), (425, 49509), (765, 27505), (1275, 16503), (3825, 5501)]