21706867

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 27406080

約数和(自身を除く): 5699213

約数列:

[1, 7, 13, 59, 91, 169, 311, 413, 767, 1183, 2177, 4043, 5369, 9971, 18349, 28301, 52559, 69797, 128443, 238537, 367913, 1669759, 3100981, 21706867]

約数ペア:

[(1, 21706867), (7, 3100981), (13, 1669759), (59, 367913), (91, 238537), (169, 128443), (311, 69797), (413, 52559), (767, 28301), (1183, 18349), (2177, 9971), (4043, 5369)]