20789505

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41999}}^1$

素因数の和:42021

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 18522495

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 41999, 125997, 209995, 377991, 461989, 629985, 1385967, 1889955, 2309945, 4157901, 6929835, 20789505]

約数ペア:

[(1, 20789505), (3, 6929835), (5, 4157901), (9, 2309945), (11, 1889955), (15, 1385967), (33, 629985), (45, 461989), (55, 377991), (99, 209995), (165, 125997), (495, 41999)]