19858914817

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1\times {\mathrm{787}}^1$

素因数の和:1022

約数の個数: 64

約数和(自身を含む): 25526661120

約数和(自身を除く): 5667746303

約数列:

[1, 7, 19, 23, 73, 113, 133, 161, 437, 511, 787, 791, 1387, 1679, 2147, 2599, 3059, 5509, 8249, 9709, 11753, 14953, 15029, 18101, 18193, 31901, 49381, 57451, 57743, 88931, 104671, 126707, 156731, 189727, 223307, 343919, 345667, 402157, 622517, 1091569, 1097117, 1321373, 1328089, 1689689, 2045413, 2407433, 3604813, 6491963, 7640983, 9249611, 11827823, 14317891, 25106087, 25233691, 38862847, 45443741, 123347297, 149315149, 175742609, 272039929, 863431079, 1045206043, 2836987831, 19858914817]

約数ペア:

[(1, 19858914817), (7, 2836987831), (19, 1045206043), (23, 863431079), (73, 272039929), (113, 175742609), (133, 149315149), (161, 123347297), (437, 45443741), (511, 38862847), (787, 25233691), (791, 25106087), (1387, 14317891), (1679, 11827823), (2147, 9249611), (2599, 7640983), (3059, 6491963), (5509, 3604813), (8249, 2407433), (9709, 2045413), (11753, 1689689), (14953, 1328089), (15029, 1321373), (18101, 1097117), (18193, 1091569), (31901, 622517), (49381, 402157), (57451, 345667), (57743, 343919), (88931, 223307), (104671, 189727), (126707, 156731)]