21221025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{487}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 40664064

約数和(自身を除く): 19443039

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 83, 105, 175, 249, 415, 487, 525, 581, 1245, 1461, 1743, 2075, 2435, 2905, 3409, 6225, 7305, 8715, 10227, 12175, 14525, 17045, 36525, 40421, 43575, 51135, 85225, 121263, 202105, 255675, 282947, 606315, 848841, 1010525, 1414735, 3031575, 4244205, 7073675, 21221025]

約数ペア:

[(1, 21221025), (3, 7073675), (5, 4244205), (7, 3031575), (15, 1414735), (21, 1010525), (25, 848841), (35, 606315), (75, 282947), (83, 255675), (105, 202105), (175, 121263), (249, 85225), (415, 51135), (487, 43575), (525, 40421), (581, 36525), (1245, 17045), (1461, 14525), (1743, 12175), (2075, 10227), (2435, 8715), (2905, 7305), (3409, 6225)]