21121684

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{383}}^1\times {\mathrm{811}}^1$

素因数の和:1215

約数の個数: 24

約数和(自身を含む): 39287808

約数和(自身を除く): 18166124

約数列:

[1, 2, 4, 17, 34, 68, 383, 766, 811, 1532, 1622, 3244, 6511, 13022, 13787, 26044, 27574, 55148, 310613, 621226, 1242452, 5280421, 10560842, 21121684]

約数ペア:

[(1, 21121684), (2, 10560842), (4, 5280421), (17, 1242452), (34, 621226), (68, 310613), (383, 55148), (766, 27574), (811, 26044), (1532, 13787), (1622, 13022), (3244, 6511)]