20687280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86197}}^1$

素因数の和:86213

約数の個数: 40

約数和(自身を含む): 64131312

約数和(自身を除く): 43444032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86197, 172394, 258591, 344788, 430985, 517182, 689576, 861970, 1034364, 1292955, 1379152, 1723940, 2068728, 2585910, 3447880, 4137456, 5171820, 6895760, 10343640, 20687280]

約数ペア:

[(1, 20687280), (2, 10343640), (3, 6895760), (4, 5171820), (5, 4137456), (6, 3447880), (8, 2585910), (10, 2068728), (12, 1723940), (15, 1379152), (16, 1292955), (20, 1034364), (24, 861970), (30, 689576), (40, 517182), (48, 430985), (60, 344788), (80, 258591), (120, 172394), (240, 86197)]