21491272

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{244219}}^1$

素因数の和:244236

約数の個数: 16

約数和(自身を含む): 43959600

約数和(自身を除く): 22468328

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 244219, 488438, 976876, 1953752, 2686409, 5372818, 10745636, 21491272]

約数ペア:

[(1, 21491272), (2, 10745636), (4, 5372818), (8, 2686409), (11, 1953752), (22, 976876), (44, 488438), (88, 244219)]