21507087

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{33037}}^1$

素因数の和:33078

約数の個数: 16

約数和(自身を含む): 33830912

約数和(自身を除く): 12323825

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 33037, 99111, 231259, 693777, 1024147, 3072441, 7169029, 21507087]

約数ペア:

[(1, 21507087), (3, 7169029), (7, 3072441), (21, 1024147), (31, 693777), (93, 231259), (217, 99111), (651, 33037)]