21577591

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{7219}}^1$

素因数の和:7294

約数の個数: 12

約数和(自身を含む): 25515480

約数和(自身を除く): 3937889

約数列:

[1, 7, 49, 61, 427, 2989, 7219, 50533, 353731, 440359, 3082513, 21577591]

約数ペア:

[(1, 21577591), (7, 3082513), (49, 440359), (61, 353731), (427, 50533), (2989, 7219)]