21380280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178169}}^1$

素因数の和:178183

約数の個数: 32

約数和(自身を含む): 64141200

約数和(自身を除く): 42760920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178169, 356338, 534507, 712676, 890845, 1069014, 1425352, 1781690, 2138028, 2672535, 3563380, 4276056, 5345070, 7126760, 10690140, 21380280]

約数ペア:

[(1, 21380280), (2, 10690140), (3, 7126760), (4, 5345070), (5, 4276056), (6, 3563380), (8, 2672535), (10, 2138028), (12, 1781690), (15, 1425352), (20, 1069014), (24, 890845), (30, 712676), (40, 534507), (60, 356338), (120, 178169)]