21647240

素因数分解:

$2^3\times 5^1\times {\mathrm{541181}}^1$

素因数の和:541192

約数の個数: 16

約数和(自身を含む): 48706380

約数和(自身を除く): 27059140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541181, 1082362, 2164724, 2705905, 4329448, 5411810, 10823620, 21647240]

約数ペア:

[(1, 21647240), (2, 10823620), (4, 5411810), (5, 4329448), (8, 2705905), (10, 2164724), (20, 1082362), (40, 541181)]