21183605

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{827}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 26231040

約数和(自身を除く): 5047435

約数列:

[1, 5, 47, 109, 235, 545, 827, 4135, 5123, 25615, 38869, 90143, 194345, 450715, 4236721, 21183605]

約数ペア:

[(1, 21183605), (5, 4236721), (47, 450715), (109, 194345), (235, 90143), (545, 38869), (827, 25615), (4135, 5123)]