1257340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1283}}^1$

素因数の和:1306

約数の個数: 36

約数和(自身を含む): 3073896

約数和(自身を除く): 1816556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1283, 2566, 5132, 6415, 8981, 12830, 17962, 25660, 35924, 44905, 62867, 89810, 125734, 179620, 251468, 314335, 628670, 1257340]

約数ペア:

[(1, 1257340), (2, 628670), (4, 314335), (5, 251468), (7, 179620), (10, 125734), (14, 89810), (20, 62867), (28, 44905), (35, 35924), (49, 25660), (70, 17962), (98, 12830), (140, 8981), (196, 6415), (245, 5132), (490, 2566), (980, 1283)]