21455760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89399}}^1$

素因数の和:89415

約数の個数: 40

約数和(自身を含む): 66513600

約数和(自身を除く): 45057840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89399, 178798, 268197, 357596, 446995, 536394, 715192, 893990, 1072788, 1340985, 1430384, 1787980, 2145576, 2681970, 3575960, 4291152, 5363940, 7151920, 10727880, 21455760]

約数ペア:

[(1, 21455760), (2, 10727880), (3, 7151920), (4, 5363940), (5, 4291152), (6, 3575960), (8, 2681970), (10, 2145576), (12, 1787980), (15, 1430384), (16, 1340985), (20, 1072788), (24, 893990), (30, 715192), (40, 536394), (48, 446995), (60, 357596), (80, 268197), (120, 178798), (240, 89399)]