19680920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70289}}^1$

素因数の和:70307

約数の個数: 32

約数和(自身を含む): 50608800

約数和(自身を除く): 30927880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70289, 140578, 281156, 351445, 492023, 562312, 702890, 984046, 1405780, 1968092, 2460115, 2811560, 3936184, 4920230, 9840460, 19680920]

約数ペア:

[(1, 19680920), (2, 9840460), (4, 4920230), (5, 3936184), (7, 2811560), (8, 2460115), (10, 1968092), (14, 1405780), (20, 984046), (28, 702890), (35, 562312), (40, 492023), (56, 351445), (70, 281156), (140, 140578), (280, 70289)]