21868553

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 26544672

約数和(自身を除く): 4676119

約数列:

[1, 7, 43, 49, 97, 107, 301, 679, 749, 2107, 4171, 4601, 4753, 5243, 10379, 29197, 32207, 72653, 204379, 225449, 446297, 508571, 3124079, 21868553]

約数ペア:

[(1, 21868553), (7, 3124079), (43, 508571), (49, 446297), (97, 225449), (107, 204379), (301, 72653), (679, 32207), (749, 29197), (2107, 10379), (4171, 5243), (4601, 4753)]