21325152944

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4743139}}^1$

素因数の和:4743428

約数の個数: 20

約数和(自身を含む): 41464529880

約数和(自身を除く): 20139376936

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4743139, 9486278, 18972556, 37945112, 75890224, 1332822059, 2665644118, 5331288236, 10662576472, 21325152944]

約数ペア:

[(1, 21325152944), (2, 10662576472), (4, 5331288236), (8, 2665644118), (16, 1332822059), (281, 75890224), (562, 37945112), (1124, 18972556), (2248, 9486278), (4496, 4743139)]