20949955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 28804608

約数和(自身を除く): 7854653

約数列:

[1, 5, 13, 31, 37, 65, 155, 185, 281, 403, 481, 1147, 1405, 2015, 2405, 3653, 5735, 8711, 10397, 14911, 18265, 43555, 51985, 74555, 113243, 135161, 322307, 566215, 675805, 1611535, 4189991, 20949955]

約数ペア:

[(1, 20949955), (5, 4189991), (13, 1611535), (31, 675805), (37, 566215), (65, 322307), (155, 135161), (185, 113243), (281, 74555), (403, 51985), (481, 43555), (1147, 18265), (1405, 14911), (2015, 10397), (2405, 8711), (3653, 5735)]