20820892

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{439}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 37255680

約数和(自身を除く): 16434788

約数列:

[1, 2, 4, 71, 142, 167, 284, 334, 439, 668, 878, 1756, 11857, 23714, 31169, 47428, 62338, 73313, 124676, 146626, 293252, 5205223, 10410446, 20820892]

約数ペア:

[(1, 20820892), (2, 10410446), (4, 5205223), (71, 293252), (142, 146626), (167, 124676), (284, 73313), (334, 62338), (439, 47428), (668, 31169), (878, 23714), (1756, 11857)]