28931980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18787}}^1$

素因数の和:18814

約数の個数: 48

約数和(自身を含む): 75753216

約数和(自身を除く): 46821236

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18787, 37574, 75148, 93935, 131509, 187870, 206657, 263018, 375740, 413314, 526036, 657545, 826628, 1033285, 1315090, 1446599, 2066570, 2630180, 2893198, 4133140, 5786396, 7232995, 14465990, 28931980]

約数ペア:

[(1, 28931980), (2, 14465990), (4, 7232995), (5, 5786396), (7, 4133140), (10, 2893198), (11, 2630180), (14, 2066570), (20, 1446599), (22, 1315090), (28, 1033285), (35, 826628), (44, 657545), (55, 526036), (70, 413314), (77, 375740), (110, 263018), (140, 206657), (154, 187870), (220, 131509), (308, 93935), (385, 75148), (770, 37574), (1540, 18787)]