19889640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55249}}^1$

素因数の和:55266

約数の個数: 48

約数和(自身を含む): 64642500

約数和(自身を除く): 44752860

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55249, 110498, 165747, 220996, 276245, 331494, 441992, 497241, 552490, 662988, 828735, 994482, 1104980, 1325976, 1657470, 1988964, 2209960, 2486205, 3314940, 3977928, 4972410, 6629880, 9944820, 19889640]

約数ペア:

[(1, 19889640), (2, 9944820), (3, 6629880), (4, 4972410), (5, 3977928), (6, 3314940), (8, 2486205), (9, 2209960), (10, 1988964), (12, 1657470), (15, 1325976), (18, 1104980), (20, 994482), (24, 828735), (30, 662988), (36, 552490), (40, 497241), (45, 441992), (60, 331494), (72, 276245), (90, 220996), (120, 165747), (180, 110498), (360, 55249)]