19771980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{329533}}^1$

素因数の和:329545

約数の個数: 24

約数和(自身を含む): 55361712

約数和(自身を除く): 35589732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 329533, 659066, 988599, 1318132, 1647665, 1977198, 3295330, 3954396, 4942995, 6590660, 9885990, 19771980]

約数ペア:

[(1, 19771980), (2, 9885990), (3, 6590660), (4, 4942995), (5, 3954396), (6, 3295330), (10, 1977198), (12, 1647665), (15, 1318132), (20, 988599), (30, 659066), (60, 329533)]