128534320

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{26339}}^1$

素因数の和:26413

約数の個数: 40

約数和(自身を含む): 303752880

約数和(自身を除く): 175218560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 26339, 52678, 105356, 131695, 210712, 263390, 421424, 526780, 1053560, 1606679, 2107120, 3213358, 6426716, 8033395, 12853432, 16066790, 25706864, 32133580, 64267160, 128534320]

約数ペア:

[(1, 128534320), (2, 64267160), (4, 32133580), (5, 25706864), (8, 16066790), (10, 12853432), (16, 8033395), (20, 6426716), (40, 3213358), (61, 2107120), (80, 1606679), (122, 1053560), (244, 526780), (305, 421424), (488, 263390), (610, 210712), (976, 131695), (1220, 105356), (2440, 52678), (4880, 26339)]