19938501

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{359}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 14535099

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 99, 121, 153, 187, 297, 359, 363, 459, 561, 1077, 1089, 1683, 2057, 3231, 3267, 3949, 5049, 6103, 6171, 9693, 11847, 18309, 18513, 35541, 43439, 54927, 55539, 67133, 106623, 130317, 164781, 201399, 390951, 604197, 738463, 1172853, 1812591, 2215389, 6646167, 19938501]

約数ペア:

[(1, 19938501), (3, 6646167), (9, 2215389), (11, 1812591), (17, 1172853), (27, 738463), (33, 604197), (51, 390951), (99, 201399), (121, 164781), (153, 130317), (187, 106623), (297, 67133), (359, 55539), (363, 54927), (459, 43439), (561, 35541), (1077, 18513), (1089, 18309), (1683, 11847), (2057, 9693), (3231, 6171), (3267, 6103), (3949, 5049)]