21236528075

素因数分解:

$5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{12743}}^1$

素因数の和:12956

約数の個数: 48

約数和(自身を含む): 30720176640

約数和(自身を除く): 9483648565

約数列:

[1, 5, 7, 25, 35, 89, 107, 175, 445, 535, 623, 749, 2225, 2675, 3115, 3745, 9523, 12743, 15575, 18725, 47615, 63715, 66661, 89201, 238075, 318575, 333305, 446005, 1134127, 1363501, 1666525, 2230025, 5670635, 6817505, 7938889, 9544507, 28353175, 34087525, 39694445, 47722535, 121351589, 198472225, 238612675, 606757945, 849461123, 3033789725, 4247305615, 21236528075]

約数ペア:

[(1, 21236528075), (5, 4247305615), (7, 3033789725), (25, 849461123), (35, 606757945), (89, 238612675), (107, 198472225), (175, 121351589), (445, 47722535), (535, 39694445), (623, 34087525), (749, 28353175), (2225, 9544507), (2675, 7938889), (3115, 6817505), (3745, 5670635), (9523, 2230025), (12743, 1666525), (15575, 1363501), (18725, 1134127), (47615, 446005), (63715, 333305), (66661, 318575), (89201, 238075)]