261808144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2137}}^1$

素因数の和:2208

約数の個数: 80

約数和(自身を含む): 593850880

約数和(自身を除く): 332042736

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 38, 52, 62, 76, 104, 124, 152, 208, 247, 248, 304, 403, 494, 496, 589, 806, 988, 1178, 1612, 1976, 2137, 2356, 3224, 3952, 4274, 4712, 6448, 7657, 8548, 9424, 15314, 17096, 27781, 30628, 34192, 40603, 55562, 61256, 66247, 81206, 111124, 122512, 132494, 162412, 222248, 264988, 324824, 444496, 527839, 529976, 649648, 861211, 1055678, 1059952, 1258693, 1722422, 2111356, 2517386, 3444844, 4222712, 5034772, 6889688, 8445424, 10069544, 13779376, 16363009, 20139088, 32726018, 65452036, 130904072, 261808144]

約数ペア:

[(1, 261808144), (2, 130904072), (4, 65452036), (8, 32726018), (13, 20139088), (16, 16363009), (19, 13779376), (26, 10069544), (31, 8445424), (38, 6889688), (52, 5034772), (62, 4222712), (76, 3444844), (104, 2517386), (124, 2111356), (152, 1722422), (208, 1258693), (247, 1059952), (248, 1055678), (304, 861211), (403, 649648), (494, 529976), (496, 527839), (589, 444496), (806, 324824), (988, 264988), (1178, 222248), (1612, 162412), (1976, 132494), (2137, 122512), (2356, 111124), (3224, 81206), (3952, 66247), (4274, 61256), (4712, 55562), (6448, 40603), (7657, 34192), (8548, 30628), (9424, 27781), (15314, 17096)]