21505790

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{45757}}^1$

素因数の和:45811

約数の個数: 16

約数和(自身を含む): 39534912

約数和(自身を除く): 18029122

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 45757, 91514, 228785, 457570, 2150579, 4301158, 10752895, 21505790]

約数ペア:

[(1, 21505790), (2, 10752895), (5, 4301158), (10, 2150579), (47, 457570), (94, 228785), (235, 91514), (470, 45757)]