21717451

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{3137}}^1$

素因数の和:3210

約数の個数: 16

約数和(自身を含む): 26509824

約数和(自身を除く): 4792373

約数列:

[1, 7, 23, 43, 161, 301, 989, 3137, 6923, 21959, 72151, 134891, 505057, 944237, 3102493, 21717451]

約数ペア:

[(1, 21717451), (7, 3102493), (23, 944237), (43, 505057), (161, 134891), (301, 72151), (989, 21959), (3137, 6923)]