128120240

素因数分解:

$2^4\times 5^1\times {\mathrm{1601503}}^1$

素因数の和:1601516

約数の個数: 20

約数和(自身を含む): 297879744

約数和(自身を除く): 169759504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1601503, 3203006, 6406012, 8007515, 12812024, 16015030, 25624048, 32030060, 64060120, 128120240]

約数ペア:

[(1, 128120240), (2, 64060120), (4, 32030060), (5, 25624048), (8, 16015030), (10, 12812024), (16, 8007515), (20, 6406012), (40, 3203006), (80, 1601503)]