638768081

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{1721}}^1\times {\mathrm{3119}}^1$

素因数の和:4864

約数の個数: 16

約数和(自身を含む): 773660160

約数和(自身を除く): 134892079

約数列:

[1, 7, 17, 119, 1721, 3119, 12047, 21833, 29257, 53023, 204799, 371161, 5367799, 37574593, 91252583, 638768081]

約数ペア:

[(1, 638768081), (7, 91252583), (17, 37574593), (119, 5367799), (1721, 371161), (3119, 204799), (12047, 53023), (21833, 29257)]