21397260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{356621}}^1$

素因数の和:356633

約数の個数: 24

約数和(自身を含む): 59912496

約数和(自身を除く): 38515236

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 356621, 713242, 1069863, 1426484, 1783105, 2139726, 3566210, 4279452, 5349315, 7132420, 10698630, 21397260]

約数ペア:

[(1, 21397260), (2, 10698630), (3, 7132420), (4, 5349315), (5, 4279452), (6, 3566210), (10, 2139726), (12, 1783105), (15, 1426484), (20, 1069863), (30, 713242), (60, 356621)]