19866980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141907}}^1$

素因数の和:141923

約数の個数: 24

約数和(自身を含む): 47681088

約数和(自身を除く): 27814108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141907, 283814, 567628, 709535, 993349, 1419070, 1986698, 2838140, 3973396, 4966745, 9933490, 19866980]

約数ペア:

[(1, 19866980), (2, 9933490), (4, 4966745), (5, 3973396), (7, 2838140), (10, 1986698), (14, 1419070), (20, 993349), (28, 709535), (35, 567628), (70, 283814), (140, 141907)]