9981440

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{557}}^1$

素因数の和:587

約数の個数: 80

約数和(自身を含む): 27400032

約数和(自身を除く): 17418592

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 557, 560, 640, 896, 1114, 1120, 1280, 1792, 2228, 2240, 2560, 2785, 3584, 3899, 4456, 4480, 5570, 7798, 8912, 8960, 11140, 15596, 17824, 17920, 19495, 22280, 31192, 35648, 38990, 44560, 62384, 71296, 77980, 89120, 124768, 142592, 155960, 178240, 249536, 285184, 311920, 356480, 499072, 623840, 712960, 998144, 1247680, 1425920, 1996288, 2495360, 4990720, 9981440]

約数ペア:

[(1, 9981440), (2, 4990720), (4, 2495360), (5, 1996288), (7, 1425920), (8, 1247680), (10, 998144), (14, 712960), (16, 623840), (20, 499072), (28, 356480), (32, 311920), (35, 285184), (40, 249536), (56, 178240), (64, 155960), (70, 142592), (80, 124768), (112, 89120), (128, 77980), (140, 71296), (160, 62384), (224, 44560), (256, 38990), (280, 35648), (320, 31192), (448, 22280), (512, 19495), (557, 17920), (560, 17824), (640, 15596), (896, 11140), (1114, 8960), (1120, 8912), (1280, 7798), (1792, 5570), (2228, 4480), (2240, 4456), (2560, 3899), (2785, 3584)]