21480208

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{8039}}^1$

素因数の和:8214

約数の個数: 20

約数和(自身を含む): 41872320

約数和(自身を除く): 20392112

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 8039, 16078, 32156, 64312, 128624, 1342513, 2685026, 5370052, 10740104, 21480208]

約数ペア:

[(1, 21480208), (2, 10740104), (4, 5370052), (8, 2685026), (16, 1342513), (167, 128624), (334, 64312), (668, 32156), (1336, 16078), (2672, 8039)]