20005271

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 25536000

約数和(自身を除く): 5530729

約数列:

[1, 11, 13, 19, 37, 143, 199, 209, 247, 407, 481, 703, 2189, 2587, 2717, 3781, 5291, 7363, 7733, 9139, 28457, 41591, 49153, 80993, 95719, 100529, 139897, 540683, 1052909, 1538867, 1818661, 20005271]

約数ペア:

[(1, 20005271), (11, 1818661), (13, 1538867), (19, 1052909), (37, 540683), (143, 139897), (199, 100529), (209, 95719), (247, 80993), (407, 49153), (481, 41591), (703, 28457), (2189, 9139), (2587, 7733), (2717, 7363), (3781, 5291)]