28497800

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1601}}^1$

素因数の和:1706

約数の個数: 48

約数和(自身を含む): 67043700

約数和(自身を除く): 38545900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1601, 1780, 2225, 3202, 3560, 4450, 6404, 8005, 8900, 12808, 16010, 17800, 32020, 40025, 64040, 80050, 142489, 160100, 284978, 320200, 569956, 712445, 1139912, 1424890, 2849780, 3562225, 5699560, 7124450, 14248900, 28497800]

約数ペア:

[(1, 28497800), (2, 14248900), (4, 7124450), (5, 5699560), (8, 3562225), (10, 2849780), (20, 1424890), (25, 1139912), (40, 712445), (50, 569956), (89, 320200), (100, 284978), (178, 160100), (200, 142489), (356, 80050), (445, 64040), (712, 40025), (890, 32020), (1601, 17800), (1780, 16010), (2225, 12808), (3202, 8900), (3560, 8005), (4450, 6404)]