19781047

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 5378633

約数列:

[1, 11, 13, 17, 79, 103, 143, 187, 221, 869, 1027, 1133, 1339, 1343, 1751, 2431, 8137, 11297, 14729, 14773, 17459, 19261, 22763, 89507, 105781, 138329, 192049, 250393, 1163591, 1521619, 1798277, 19781047]

約数ペア:

[(1, 19781047), (11, 1798277), (13, 1521619), (17, 1163591), (79, 250393), (103, 192049), (143, 138329), (187, 105781), (221, 89507), (869, 22763), (1027, 19261), (1133, 17459), (1339, 14773), (1343, 14729), (1751, 11297), (2431, 8137)]