128288321

素因数分解:

$7^2\times {\mathrm{401}}^1\times {\mathrm{6529}}^1$

素因数の和:6944

約数の個数: 12

約数和(自身を含む): 149628420

約数和(自身を除く): 21340099

約数列:

[1, 7, 49, 401, 2807, 6529, 19649, 45703, 319921, 2618129, 18326903, 128288321]

約数ペア:

[(1, 128288321), (7, 18326903), (49, 2618129), (401, 319921), (2807, 45703), (6529, 19649)]