21484477

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{521}}^1$

素因数の和:708

約数の個数: 16

約数和(自身を含む): 25356672

約数和(自身を除く): 3872195

約数列:

[1, 7, 43, 137, 301, 521, 959, 3647, 5891, 22403, 41237, 71377, 156821, 499639, 3069211, 21484477]

約数ペア:

[(1, 21484477), (7, 3069211), (43, 499639), (137, 156821), (301, 71377), (521, 41237), (959, 22403), (3647, 5891)]