21292420

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4649}}^1$

素因数の和:4887

約数の個数: 24

約数和(自身を含む): 44919000

約数和(自身を除く): 23626580

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 4649, 9298, 18596, 23245, 46490, 92980, 1064621, 2129242, 4258484, 5323105, 10646210, 21292420]

約数ペア:

[(1, 21292420), (2, 10646210), (4, 5323105), (5, 4258484), (10, 2129242), (20, 1064621), (229, 92980), (458, 46490), (916, 23245), (1145, 18596), (2290, 9298), (4580, 4649)]