210925519

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{20681}}^1$

素因数の和:20766

約数の個数: 16

約数和(自身を含む): 254140416

約数和(自身を除く): 43214897

約数列:

[1, 7, 31, 47, 217, 329, 1457, 10199, 20681, 144767, 641111, 972007, 4487777, 6804049, 30132217, 210925519]

約数ペア:

[(1, 210925519), (7, 30132217), (31, 6804049), (47, 4487777), (217, 972007), (329, 641111), (1457, 144767), (10199, 20681)]