28303280

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{709}}^1$

素因数の和:1221

約数の個数: 40

約数和(自身を含む): 66030000

約数和(自身を除く): 37726720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 709, 998, 1418, 1996, 2495, 2836, 3545, 3992, 4990, 5672, 7090, 7984, 9980, 11344, 14180, 19960, 28360, 39920, 56720, 353791, 707582, 1415164, 1768955, 2830328, 3537910, 5660656, 7075820, 14151640, 28303280]

約数ペア:

[(1, 28303280), (2, 14151640), (4, 7075820), (5, 5660656), (8, 3537910), (10, 2830328), (16, 1768955), (20, 1415164), (40, 707582), (80, 353791), (499, 56720), (709, 39920), (998, 28360), (1418, 19960), (1996, 14180), (2495, 11344), (2836, 9980), (3545, 7984), (3992, 7090), (4990, 5672)]