21979364

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11617}}^1$

素因数の和:11675

約数の個数: 24

約数和(自身を含む): 42940128

約数和(自身を除く): 20960764

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11617, 23234, 46468, 127787, 255574, 499531, 511148, 999062, 1998124, 5494841, 10989682, 21979364]

約数ペア:

[(1, 21979364), (2, 10989682), (4, 5494841), (11, 1998124), (22, 999062), (43, 511148), (44, 499531), (86, 255574), (172, 127787), (473, 46468), (946, 23234), (1892, 11617)]