19556820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{108649}}^1$

素因数の和:108664

約数の個数: 36

約数和(自身を含む): 59322900

約数和(自身を除く): 39766080

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 108649, 217298, 325947, 434596, 543245, 651894, 977841, 1086490, 1303788, 1629735, 1955682, 2172980, 3259470, 3911364, 4889205, 6518940, 9778410, 19556820]

約数ペア:

[(1, 19556820), (2, 9778410), (3, 6518940), (4, 4889205), (5, 3911364), (6, 3259470), (9, 2172980), (10, 1955682), (12, 1629735), (15, 1303788), (18, 1086490), (20, 977841), (30, 651894), (36, 543245), (45, 434596), (60, 325947), (90, 217298), (180, 108649)]