399875840

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3433}}^1$

素因数の和:3474

約数の個数: 144

約数和(自身を含む): 1179208128

約数和(自身を除く): 779332288

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 256, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 728, 832, 896, 910, 1040, 1120, 1280, 1456, 1664, 1792, 1820, 2080, 2240, 2912, 3328, 3433, 3640, 4160, 4480, 5824, 6866, 7280, 8320, 8960, 11648, 13732, 14560, 16640, 17165, 23296, 24031, 27464, 29120, 34330, 44629, 48062, 54928, 58240, 68660, 89258, 96124, 109856, 116480, 120155, 137320, 178516, 192248, 219712, 223145, 240310, 274640, 312403, 357032, 384496, 439424, 446290, 480620, 549280, 624806, 714064, 768992, 878848, 892580, 961240, 1098560, 1249612, 1428128, 1537984, 1562015, 1785160, 1922480, 2197120, 2499224, 2856256, 3075968, 3124030, 3570320, 3844960, 4394240, 4998448, 5712512, 6151936, 6248060, 7140640, 7689920, 9996896, 11425024, 12496120, 14281280, 15379840, 19993792, 24992240, 28562560, 30759680, 39987584, 49984480, 57125120, 79975168, 99968960, 199937920, 399875840]

約数ペア:

[(1, 399875840), (2, 199937920), (4, 99968960), (5, 79975168), (7, 57125120), (8, 49984480), (10, 39987584), (13, 30759680), (14, 28562560), (16, 24992240), (20, 19993792), (26, 15379840), (28, 14281280), (32, 12496120), (35, 11425024), (40, 9996896), (52, 7689920), (56, 7140640), (64, 6248060), (65, 6151936), (70, 5712512), (80, 4998448), (91, 4394240), (104, 3844960), (112, 3570320), (128, 3124030), (130, 3075968), (140, 2856256), (160, 2499224), (182, 2197120), (208, 1922480), (224, 1785160), (256, 1562015), (260, 1537984), (280, 1428128), (320, 1249612), (364, 1098560), (416, 961240), (448, 892580), (455, 878848), (520, 768992), (560, 714064), (640, 624806), (728, 549280), (832, 480620), (896, 446290), (910, 439424), (1040, 384496), (1120, 357032), (1280, 312403), (1456, 274640), (1664, 240310), (1792, 223145), (1820, 219712), (2080, 192248), (2240, 178516), (2912, 137320), (3328, 120155), (3433, 116480), (3640, 109856), (4160, 96124), (4480, 89258), (5824, 68660), (6866, 58240), (7280, 54928), (8320, 48062), (8960, 44629), (11648, 34330), (13732, 29120), (14560, 27464), (16640, 24031), (17165, 23296)]