19889080

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1021}}^1$

素因数の和:1519

約数の個数: 32

約数和(自身を含む): 44886240

約数和(自身を除く): 24997160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1021, 1948, 2042, 2435, 3896, 4084, 4870, 5105, 8168, 9740, 10210, 19480, 20420, 40840, 497227, 994454, 1988908, 2486135, 3977816, 4972270, 9944540, 19889080]

約数ペア:

[(1, 19889080), (2, 9944540), (4, 4972270), (5, 3977816), (8, 2486135), (10, 1988908), (20, 994454), (40, 497227), (487, 40840), (974, 20420), (1021, 19480), (1948, 10210), (2042, 9740), (2435, 8168), (3896, 5105), (4084, 4870)]