13211975

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4441}}^1$

素因数の和:4475

約数の個数: 24

約数和(自身を含む): 19829088

約数和(自身を除く): 6617113

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 4441, 22205, 31087, 75497, 111025, 155435, 377485, 528479, 777175, 1887425, 2642395, 13211975]

約数ペア:

[(1, 13211975), (5, 2642395), (7, 1887425), (17, 777175), (25, 528479), (35, 377485), (85, 155435), (119, 111025), (175, 75497), (425, 31087), (595, 22205), (2975, 4441)]