128756888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{39937}}^1$

素因数の和:39987

約数の個数: 32

約数和(自身を含む): 268383360

約数和(自身を除く): 139626472

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 39937, 79874, 159748, 319496, 519181, 1038362, 1238047, 2076724, 2476094, 4153448, 4952188, 9904376, 16094611, 32189222, 64378444, 128756888]

約数ペア:

[(1, 128756888), (2, 64378444), (4, 32189222), (8, 16094611), (13, 9904376), (26, 4952188), (31, 4153448), (52, 2476094), (62, 2076724), (104, 1238047), (124, 1038362), (248, 519181), (403, 319496), (806, 159748), (1612, 79874), (3224, 39937)]