20421965

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{1871}}^1$

素因数の和:1972

約数の個数: 16

約数和(自身を含む): 25608960

約数和(自身を除く): 5186995

約数列:

[1, 5, 37, 59, 185, 295, 1871, 2183, 9355, 10915, 69227, 110389, 346135, 551945, 4084393, 20421965]

約数ペア:

[(1, 20421965), (5, 4084393), (37, 551945), (59, 346135), (185, 110389), (295, 69227), (1871, 10915), (2183, 9355)]