128007256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{64781}}^1$

素因数の和:64819

約数の個数: 32

約数和(自身を含む): 272084400

約数和(自身を除く): 144077144

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 64781, 129562, 259124, 518248, 842153, 1230839, 1684306, 2461678, 3368612, 4923356, 6737224, 9846712, 16000907, 32001814, 64003628, 128007256]

約数ペア:

[(1, 128007256), (2, 64003628), (4, 32001814), (8, 16000907), (13, 9846712), (19, 6737224), (26, 4923356), (38, 3368612), (52, 2461678), (76, 1684306), (104, 1230839), (152, 842153), (247, 518248), (494, 259124), (988, 129562), (1976, 64781)]