19445075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 28331520

約数和(自身を除く): 8886445

約数列:

[1, 5, 13, 19, 25, 47, 65, 67, 95, 235, 247, 325, 335, 475, 611, 871, 893, 1175, 1235, 1273, 1675, 3055, 3149, 4355, 4465, 6175, 6365, 11609, 15275, 15745, 16549, 21775, 22325, 31825, 40937, 58045, 59831, 78725, 82745, 204685, 290225, 299155, 413725, 777803, 1023425, 1495775, 3889015, 19445075]

約数ペア:

[(1, 19445075), (5, 3889015), (13, 1495775), (19, 1023425), (25, 777803), (47, 413725), (65, 299155), (67, 290225), (95, 204685), (235, 82745), (247, 78725), (325, 59831), (335, 58045), (475, 40937), (611, 31825), (871, 22325), (893, 21775), (1175, 16549), (1235, 15745), (1273, 15275), (1675, 11609), (3055, 6365), (3149, 6175), (4355, 4465)]