2440840

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{439}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 5544000

約数和(自身を除く): 3103160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 439, 556, 695, 878, 1112, 1390, 1756, 2195, 2780, 3512, 4390, 5560, 8780, 17560, 61021, 122042, 244084, 305105, 488168, 610210, 1220420, 2440840]

約数ペア:

[(1, 2440840), (2, 1220420), (4, 610210), (5, 488168), (8, 305105), (10, 244084), (20, 122042), (40, 61021), (139, 17560), (278, 8780), (439, 5560), (556, 4390), (695, 3512), (878, 2780), (1112, 2195), (1390, 1756)]