28250215

素因数分解:

$5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{1721}}^1$

素因数の和:1807

約数の個数: 24

約数和(自身を含む): 40046832

約数和(自身を除く): 11796617

約数列:

[1, 5, 7, 35, 49, 67, 245, 335, 469, 1721, 2345, 3283, 8605, 12047, 16415, 60235, 84329, 115307, 421645, 576535, 807149, 4035745, 5650043, 28250215]

約数ペア:

[(1, 28250215), (5, 5650043), (7, 4035745), (35, 807149), (49, 576535), (67, 421645), (245, 115307), (335, 84329), (469, 60235), (1721, 16415), (2345, 12047), (3283, 8605)]