2721215

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{383}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 3939840

約数和(自身を除く): 1218625

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 383, 1015, 1421, 1915, 2681, 7105, 11107, 13405, 18767, 55535, 77749, 93835, 388745, 544243, 2721215]

約数ペア:

[(1, 2721215), (5, 544243), (7, 388745), (29, 93835), (35, 77749), (49, 55535), (145, 18767), (203, 13405), (245, 11107), (383, 7105), (1015, 2681), (1421, 1915)]