21388020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{356467}}^1$

素因数の和:356479

約数の個数: 24

約数和(自身を含む): 59886624

約数和(自身を除く): 38498604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 356467, 712934, 1069401, 1425868, 1782335, 2138802, 3564670, 4277604, 5347005, 7129340, 10694010, 21388020]

約数ペア:

[(1, 21388020), (2, 10694010), (3, 7129340), (4, 5347005), (5, 4277604), (6, 3564670), (10, 2138802), (12, 1782335), (15, 1425868), (20, 1069401), (30, 712934), (60, 356467)]