19999837

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 26248320

約数和(自身を除く): 6248483

約数列:

[1, 11, 13, 17, 19, 143, 187, 209, 221, 247, 323, 433, 2431, 2717, 3553, 4199, 4763, 5629, 7361, 8227, 46189, 61919, 80971, 90497, 95693, 106951, 139859, 1052623, 1176461, 1538449, 1818167, 19999837]

約数ペア:

[(1, 19999837), (11, 1818167), (13, 1538449), (17, 1176461), (19, 1052623), (143, 139859), (187, 106951), (209, 95693), (221, 90497), (247, 80971), (323, 61919), (433, 46189), (2431, 8227), (2717, 7361), (3553, 5629), (4199, 4763)]