128827120

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{26399}}^1$

素因数の和:26473

約数の個数: 40

約数和(自身を含む): 304444800

約数和(自身を除く): 175617680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 26399, 52798, 105596, 131995, 211192, 263990, 422384, 527980, 1055960, 1610339, 2111920, 3220678, 6441356, 8051695, 12882712, 16103390, 25765424, 32206780, 64413560, 128827120]

約数ペア:

[(1, 128827120), (2, 64413560), (4, 32206780), (5, 25765424), (8, 16103390), (10, 12882712), (16, 8051695), (20, 6441356), (40, 3220678), (61, 2111920), (80, 1610339), (122, 1055960), (244, 527980), (305, 422384), (488, 263990), (610, 211192), (976, 131995), (1220, 105596), (2440, 52798), (4880, 26399)]