128975840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{16451}}^1$

素因数の和:16480

約数の個数: 72

約数和(自身を含む): 354474792

約数和(自身を除く): 225498952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 16451, 32902, 65804, 82255, 115157, 131608, 164510, 230314, 263216, 329020, 460628, 526432, 575785, 658040, 806099, 921256, 1151570, 1316080, 1612198, 1842512, 2303140, 2632160, 3224396, 3685024, 4030495, 4606280, 6448792, 8060990, 9212560, 12897584, 16121980, 18425120, 25795168, 32243960, 64487920, 128975840]

約数ペア:

[(1, 128975840), (2, 64487920), (4, 32243960), (5, 25795168), (7, 18425120), (8, 16121980), (10, 12897584), (14, 9212560), (16, 8060990), (20, 6448792), (28, 4606280), (32, 4030495), (35, 3685024), (40, 3224396), (49, 2632160), (56, 2303140), (70, 1842512), (80, 1612198), (98, 1316080), (112, 1151570), (140, 921256), (160, 806099), (196, 658040), (224, 575785), (245, 526432), (280, 460628), (392, 329020), (490, 263216), (560, 230314), (784, 164510), (980, 131608), (1120, 115157), (1568, 82255), (1960, 65804), (3920, 32902), (7840, 16451)]