19810210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40429}}^1$

素因数の和:40450

約数の個数: 24

約数和(自身を含む): 41481180

約数和(自身を除く): 21670970

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40429, 80858, 202145, 283003, 404290, 566006, 1415015, 1981021, 2830030, 3962042, 9905105, 19810210]

約数ペア:

[(1, 19810210), (2, 9905105), (5, 3962042), (7, 2830030), (10, 1981021), (14, 1415015), (35, 566006), (49, 404290), (70, 283003), (98, 202145), (245, 80858), (490, 40429)]