21393992

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{72277}}^1$

素因数の和:72320

約数の個数: 16

約数和(自身を含む): 41198460

約数和(自身を除く): 19804468

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 72277, 144554, 289108, 578216, 2674249, 5348498, 10696996, 21393992]

約数ペア:

[(1, 21393992), (2, 10696996), (4, 5348498), (8, 2674249), (37, 578216), (74, 289108), (148, 144554), (296, 72277)]