399887680

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{739}}^1$

素因数の和:864

約数の個数: 112

約数和(自身を含む): 1014984000

約数和(自身を除く): 615096320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 89, 95, 152, 160, 178, 190, 304, 320, 356, 380, 445, 608, 712, 739, 760, 890, 1216, 1424, 1478, 1520, 1691, 1780, 2848, 2956, 3040, 3382, 3560, 3695, 5696, 5912, 6080, 6764, 7120, 7390, 8455, 11824, 13528, 14041, 14240, 14780, 16910, 23648, 27056, 28082, 28480, 29560, 33820, 47296, 54112, 56164, 59120, 65771, 67640, 70205, 108224, 112328, 118240, 131542, 135280, 140410, 224656, 236480, 263084, 270560, 280820, 328855, 449312, 526168, 541120, 561640, 657710, 898624, 1052336, 1123280, 1249649, 1315420, 2104672, 2246560, 2499298, 2630840, 4209344, 4493120, 4998596, 5261680, 6248245, 9997192, 10523360, 12496490, 19994384, 21046720, 24992980, 39988768, 49985960, 79977536, 99971920, 199943840, 399887680]

約数ペア:

[(1, 399887680), (2, 199943840), (4, 99971920), (5, 79977536), (8, 49985960), (10, 39988768), (16, 24992980), (19, 21046720), (20, 19994384), (32, 12496490), (38, 10523360), (40, 9997192), (64, 6248245), (76, 5261680), (80, 4998596), (89, 4493120), (95, 4209344), (152, 2630840), (160, 2499298), (178, 2246560), (190, 2104672), (304, 1315420), (320, 1249649), (356, 1123280), (380, 1052336), (445, 898624), (608, 657710), (712, 561640), (739, 541120), (760, 526168), (890, 449312), (1216, 328855), (1424, 280820), (1478, 270560), (1520, 263084), (1691, 236480), (1780, 224656), (2848, 140410), (2956, 135280), (3040, 131542), (3382, 118240), (3560, 112328), (3695, 108224), (5696, 70205), (5912, 67640), (6080, 65771), (6764, 59120), (7120, 56164), (7390, 54112), (8455, 47296), (11824, 33820), (13528, 29560), (14041, 28480), (14240, 28082), (14780, 27056), (16910, 23648)]