21142456

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19013}}^1$

素因数の和:19158

約数の個数: 16

約数和(自身を含む): 39929400

約数和(自身を除く): 18786944

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19013, 38026, 76052, 152104, 2642807, 5285614, 10571228, 21142456]

約数ペア:

[(1, 21142456), (2, 10571228), (4, 5285614), (8, 2642807), (139, 152104), (278, 76052), (556, 38026), (1112, 19013)]