21757260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51803}}^1$

素因数の和:51822

約数の個数: 48

約数和(自身を含む): 69624576

約数和(自身を除く): 47867316

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51803, 103606, 155409, 207212, 259015, 310818, 362621, 518030, 621636, 725242, 777045, 1036060, 1087863, 1450484, 1554090, 1813105, 2175726, 3108180, 3626210, 4351452, 5439315, 7252420, 10878630, 21757260]

約数ペア:

[(1, 21757260), (2, 10878630), (3, 7252420), (4, 5439315), (5, 4351452), (6, 3626210), (7, 3108180), (10, 2175726), (12, 1813105), (14, 1554090), (15, 1450484), (20, 1087863), (21, 1036060), (28, 777045), (30, 725242), (35, 621636), (42, 518030), (60, 362621), (70, 310818), (84, 259015), (105, 207212), (140, 155409), (210, 103606), (420, 51803)]