18840920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67289}}^1$

素因数の和:67307

約数の個数: 32

約数和(自身を含む): 48448800

約数和(自身を除く): 29607880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 67289, 134578, 269156, 336445, 471023, 538312, 672890, 942046, 1345780, 1884092, 2355115, 2691560, 3768184, 4710230, 9420460, 18840920]

約数ペア:

[(1, 18840920), (2, 9420460), (4, 4710230), (5, 3768184), (7, 2691560), (8, 2355115), (10, 1884092), (14, 1345780), (20, 942046), (28, 672890), (35, 538312), (40, 471023), (56, 336445), (70, 269156), (140, 134578), (280, 67289)]