21279568

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4733}}^1$

素因数の和:5022

約数の個数: 20

約数和(自身を含む): 41384628

約数和(自身を除く): 20105060

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4733, 9466, 18932, 37864, 75728, 1329973, 2659946, 5319892, 10639784, 21279568]

約数ペア:

[(1, 21279568), (2, 10639784), (4, 5319892), (8, 2659946), (16, 1329973), (281, 75728), (562, 37864), (1124, 18932), (2248, 9466), (4496, 4733)]