208815215

素因数分解:

$5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{12721}}^1$

素因数の和:12807

約数の個数: 24

約数和(自身を含む): 295862832

約数和(自身を除く): 87047617

約数列:

[1, 5, 7, 35, 49, 67, 245, 335, 469, 2345, 3283, 12721, 16415, 63605, 89047, 445235, 623329, 852307, 3116645, 4261535, 5966149, 29830745, 41763043, 208815215]

約数ペア:

[(1, 208815215), (5, 41763043), (7, 29830745), (35, 5966149), (49, 4261535), (67, 3116645), (245, 852307), (335, 623329), (469, 445235), (2345, 89047), (3283, 63605), (12721, 16415)]